Rash spot on leg

What Causes Red Spots on Legs?

Changes in your skin can be worrisome, especially if your symptoms include itchiness, discomfort, or pain.

And while red spots on your legs could be due to things like mild acne or a simple heat rash, other possible causes may warrant medical attention.

In this article, I’ll describe 12 possible causes of red spots on legs as well as treatment options and when to see a doctor. If you’ve developed a mild skin rash on your legs and you have no other symptoms, it’s OK to wait a few days to see if the rash will go away on its own.

However, if the spots persist for a few days, spread, become painful or infected, or if you develop any additional symptoms, contact your healthcare provider.

They can diagnose the rash and recommend the appropriate treatment plan.

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Potential Causes of Red Spots on Legs

Some causes of red spots on legs clear up in a few days on their own, while other causes require medical attention.

Identifying what’s going on can help determine the most effective course of treatment.

Below are some of the common causes of red spots on legs. 

Folliculitis

Folliculitis occurs when a fungal or bacterial infection (or even ingrown hairs) causes hair follicles to become inflamed or infected.

This can look like:

• Small red, itchy, or sore bumps
• White-headed pimples around hair follicles
• Tiny blister clusters around hair follicles

Mild cases of folliculitis can clear up on their own with basic self-care, including cleaning the affected area with antibacterial soap, using a warm compress, and applying soothing lotions to relieve itchy skin.

In other cases, your doctor may recommend using antibiotic or antifungal cream or shampoo.

If your folliculitis persists after a few days, contact a healthcare provider to discuss treatment options.

Psoriasis

Thick pink or red spots on the legs covered with white or silvery scales (called plaques) typically indicate psoriasis.

This chronic autoimmune disease tends to run in families.

While psoriasis most often affects only a few areas of skin, it can cover a larger area of the body.

The places most commonly affected by psoriasis are the:

• Elbows
• Knees
• Face, scalp, and inside of the mouth
• Fingernails and toenails
• Genitals
• Lower back
• Palms and feet

Steroid creams, moisturizers, and medicated lotions can treat psoriasis.

Eczema (atopic dermatitis)

Eczema (atopic dermatitis) causes dry, red, very itchy patches or spots that can appear on the hands, feet, neck, inside of elbows, legs, behind the knees, face, and elsewhere on the body.

Most times eczema is a chronic condition, with changes in severity from time to time. 

There is no cure for eczema.

However, over-the-counter (OTC) and prescription creams can help alleviate symptoms.

Hives (urticaria)

Allergies to foods, medications, or insect bites, and exposure to heat, cold, or the sun can cause hives (urticaria) in some people.

These uncomfortable, red, raised, itchy bumps come in a variety of shapes and sizes and can occur anywhere on the body.

They can also change size and location.

Hives tend to resolve after the allergic reaction ends and typically aren’t life-threatening.

Vasculitis

Vasculitis refers to the inflammation of the body’s blood vessels.

More than 20 different types of vasculitis can affect men and women of all ages. 

Hypersensitivity vasculitis (HV), also called leukocytoclastic vasculitis, is an extreme reaction to a drug, infection, or foreign substance that can cause red spots on the skin, often found on the lower legs.

In most cases, stopping use of the drug or substance causing the reaction will clear the rash.

Otherwise, prescription medications can help control symptoms. 

Keratosis pilaris

Keratin is a protein that makes up skin, hair, and nails.

If keratin builds up and plugs hair follicles, it causes keratosis pilaris.

This benign skin condition can look like small bumps or goosebumps on the skin and has a rough texture.

Keratosis pilaris more commonly affects people with very dry skin or eczema. 

Moisturizers are usually sufficient to manage symptoms, otherwise, your provider may recommend a steroid cream to reduce redness.

Insect bites

Most insect bites are harmless, but they can sometimes cause pain, itchiness, or discomfort.

Fire ant bites and certain other insect bites can also cause red spots on the skin. 

Using insect repellant and protective clothing can help prevent insect bites.

If bitten, topical or oral pain relievers, including ibuprofen (Advil) or lidocaine (Solarcaine), can help provide pain relief. Antihistamines and calamine lotion can help relieve itching.

Rosacea

Rosacea causes flushing and redness in the face.

Rarely, it causes red spots on the legs.

Most people can manage rosacea by identifying and avoiding triggers, wearing sunscreen, and, if necessary, taking prescription medication or using laser therapy.

Chicken pox

Though it’s less common since the chicken pox vaccine became available in 1995, children and adults still get this highly contagious viral infection.

Chicken pox causes raised, itchy red bumps that, over time, become blister-like and eventually break open and then crust over. Fever, headache, and fatigue often occur as well. 

These symptoms typically last 1-2 weeks and respond to home treatments such as calamine lotion, colloidal oatmeal baths, and OTC antihistamine and fever-reducing medication like acetaminophen (Tylenol) or ibuprofen (Advil).

Heat rash

Also called miliaria or prickly heat, heat rash occurs when blocked pores or sweat ducts trap sweat underneath the skin.

Adults, children, and babies can get heat rash.

Symptoms include red spots or bumps and itching or prickling.

Most heat rashes heal with cooling of the skin via methods such as spending time in air conditioning, taking a cool shower, and using cold compresses.

Acne

Acne is a common skin condition that occurs when excess oil, bacteria, and dead skin cells clog pores.

This leads to blemishes that can range in size from small whiteheads, blackheads, and red spots or bumps (pimples) to large, painful, cyst-like lumps under the skin.

While acne blemishes most commonly appear on the face, forehead, chest, upper back, and shoulders, they can also appear on the legs. 

Treatment options vary depending on the type of acne, so it’s best to contact a doctor for customized acne care.

Skin cancer

In rare cases, unexplained bumps or spots on the legs or skin can be a sign of skin cancer.

There are three major types of skin cancer: basal cell carcinoma (BCC), squamous cell carcinoma, and melanoma. Red spots on the legs could be a sign of BCC or an early form of skin cancer called Bowen’s disease.

Early detection is key to treating skin cancer, so if you notice abnormal growths or red spots on your legs that don’t go away within a week, follow up with a healthcare provider or dermatologist.

Treatment

Treatment for red spots on legs depends on the cause.

Some, such as psoriasis and eczema, may benefit from prescription lotions, ointments, and medications.

Others can be treated with over-the-counter (OTC) and home remedies.

OTC

OTC topical medications like hydrocortisone cream and calamine lotion may help alleviate itch and other symptoms caused by red spots on the skin.

And OTC pain relievers like ibuprofen (Advil) or acetaminophen (Tylenol) may help with any pain.

Home remedies

Home remedies may alleviate some symptoms of certain causes of red spots and skin rashes.

For itchy skin in particular, applying a cool compress or adding baking soda, uncooked oatmeal, or colloidal oatmeal to a lukewarm bath may bring some relief.

Before trying any home remedy, consult a healthcare professional to determine if the therapy will make your specific symptoms better or worse.

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When to See a Doctor

Many times, red spots on your legs isn’t cause for concern.

However, if they’re accompanied by severe symptoms or if they last for more than a week, contact a doctor.

They can help diagnose the cause of your symptoms and recommend a treatment plan.

How K Health Can Help

Did you know you can access online urgent care with K Health?

Check your symptoms, explore conditions and treatments, and if needed, text with a healthcare provider in minutes. 

K Health’s AI-powered app is HIPAA compliant and is based on 20 years of clinical data.

Frequently Asked Questions

What causes red spots on lower legs?

There are several possible causes of red spots on legs, including eczema (atopic dermatitis), hives (urticaria), insect bites, and heat rash. If you’re unsure what’s causing your symptoms, contact a medical provider.

What do leukemia spots look like?

Some people with acute promyelocytic leukemia develop small red dots under the skin (called petechiae) that are generally most noticeable on people with light skin tones. In people with darker skin tones, these spots may be darker or less noticeable.

Why am I getting spots on my legs?

Working with a healthcare professional is the best way to determine the exact cause of spots on your legs. Possible causes include eczema, hives, insect bites, heat rash, and more serious causes like skin cancer.

What causes little red spots on legs?

It can be difficult to discern what’s causing red spots on your legs. Possible causes include eczema, hives, insect bites, and heat rash. However, some causes can be more serious. If you’re unsure about what’s causing your symptoms, contact a medical provider.

K Health articles are all written and reviewed by MDs, PhDs, NPs, or PharmDs and are for informational purposes only. This information does not constitute and should not be relied on for professional medical advice. Always talk to your doctor about the risks and benefits of any treatment.

K Health has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. We avoid using tertiary references.

• Acute Promyelocytic Leukemia. (2020).
  https://medlineplus.gov/genetics/condition/acute-promyelocytic-leukemia/

• Don’t Mistake These Skin Conditions for Acne. (2018).
  https://www.cedars-sinai.org/blog/skin-conditions-look-like-acne.html

• Heat Rash. (2020).
  https://www.mayoclinic.org/diseases-conditions/heat-rash/symptoms-causes/syc-20373276

• Hypersensitivity Vasculitis. (2021).
  https://medlineplus.gov/ency/article/000874.htm

• Hypersensitivity Vasculitis (Leukocytoclastic). (2012).
  https://www.vasculitisfoundation.org/education/forms/hypersensitivity-vasculitis/#1543688622801-0ff50ec0-074c

• Insect Bites and Stings. (2017).
  https://medlineplus.gov/insectbitesandstings.html

• Keratosis Pilaris. (2021).
  https://medlineplus.gov/ency/article/001462.htm

• Psoriasis. (2020).
  https://my.clevelandclinic.org/health/diseases/6866-psoriasis

• Rashes. (2016).
  https://medlineplus.gov/rashes.html

• Rosacea. (2016).
  https://medlineplus.gov/rosacea.html

• Skin Cancer. (2020).
  https://www.mayoclinic.org/diseases-conditions/skin-cancer/symptoms-causes/syc-20377605

• Vasculitis Care & Research. (n.d.).
  https://my.clevelandclinic.org/departments/orthopaedics-rheumatology/depts/vasculitis

Causes of Red Bumps and Spots on Legs

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It’s not likely that you panic when you spot red bumps on your legs. In most instances, you shouldn’t. But red bumps can be itchy and annoying. Occasionally, red bumps on your legs are the sign of a more serious condition.

Red bumps can be caused by allergies, insect bites, and certain skin conditions. The sources of bumps and rashes often vary by age and health condition.

If you’re wondering about red bumps on your legs, consider some of the most common culprits.

Do you have small red or white bumps that resemble goosebumps on the fleshier areas of your thighs and arms? If they don’t itch or they itch very little, they may well be keratosis pilaris. This is a common condition, affecting approximately 50 to 80 percent of adolescents, and 40 percent of adults, according to the Journal of the American Academy of Dermatology.

Keratosis pilaris occurs when your pores are clogged with the protein keratin. Keratin is found in your skin, nails, and hair. You’re more likely to get keratosis pilaris if you have dry skin or eczema.

How it’s treated: Although the condition is harmless, you may want to talk to your doctor about using treatments such as medicated creams. There are several types of over-the-counter (OTC) medicated creams that are designed to help loosen and remove dead skin cells.

Look for products that contain ingredients such as:

• salicylic acid
• alpha-hydroxy acids (AHAs), such as lactic acid
• urea

Medicated creams may be especially beneficial when used with thick moisturizing creams. There’s no one-size-fits-all solution for this condition, but keeping your skin hydrated and moisturized should help.

In severe cases, laser therapy may be used.

Shop for OTC treatments: Shop for keratosis pilaris treatments.

Also shop for products containing salicylic acid, alpha-hydroxy acids (AHAs) such as lactic acid, and urea.

Folliculitis is typically caused by an infection in the hair follicles of the scalp or on areas of the body that have been shaved. It’s mostly caused by staph bacteria (Staphylococcus aureus). Folliculitis can also be caused by inflammation from ingrown hairs, viruses, or fungi.

It results in small red bumps or pimples on the skin, which you may know as razor burn or razor rash. Shaving, tight clothing, and the combination of heat and sweat are typical sources of folliculitis. Folliculitis can affect people of all ages, but there are certain factors which may increase your risk. You may be at higher risk of this condition if you:

• have a condition that negatively affects your immune system, such as chronic lymphocytic leukemia (CLL), diabetes, HIV, or AIDS
• have acne, especially if you’ve taken antibiotics for acne long-term
• have eczema
• have skin that’s been damaged from hair removal techniques, such as shaving against the grain or waxing
• have curly facial hair, or hair that’s prone to becoming ingrown
• wear tight clothing, or clothing made of materials which trap in heat
• frequent hot tubs which aren’t well-maintained or sanitary

Folliculitis can be itchy and uncomfortable. However, it isn’t serious unless it progresses to a more severe type of infection. These severe infections may include boils, carbuncles, and cellulitis.

How it’s treated: Folliculitis usually clears up on its own. If it lasts longer than 10 days or it worsens, you should see your doctor. Antibiotics in the form of pills or creams are typically used to treat persistent or severe folliculitis.

If the red spots combine in patches and itch like crazy, you may have eczema. Eczema, or atopic dermatitis, is a common skin condition. Eczema may be dry and scaly, or it can blister and ooze a clear fluid. Eczema tends to flare up at times. Common triggers include:

• soaps and detergents
• cleaning products
• perfumes
• cosmetics
• animal fur or dander
• wool
• sweat and heat
• cold, dry conditions
• stress

The cause of eczema is not fully understood, but there are some common patterns:

• Eczema often runs in families.
• You have a greater likelihood of getting eczema if you or a family member has asthma or seasonal allergies.
• Eczema is more common in urban areas with high levels of pollution and in colder climates.
• Children born to older mothers are more likely to have the condition.

Although people of all ages can have eczema, the American Academy of Pediatrics (AAP) says that 85 percent of cases begin in children under the age of five. Another study found that 50 percent of people who had eczema as a child continue to have some signs of the condition in adulthood.

Like most skin conditions, eczema can become infected. Additionally, if you have eczema, avoid being around people who have cold sores or chicken pox. Exposure to the viruses that cause these conditions puts you at risk of getting eczema herpeticum, a severe, rapidly spreading infection.

How it’s treated: A number of medications are used to treat eczema, including antibiotics, antihistamines, and corticosteroids. Your doctor will help you find the medications that are most effective for you.

Regular use of non-medicated moisturizing creams and ointments are also usually recommended for treatment and prevention of eczema flares. Your doctor also will work with you to identify eczema triggers and reduce your exposure to them.

Shop for OTC treatments: Shop for eczema creams and lotions.

Approximately 20 percent of people will get hives in their lifetime, says the American College of Allergy, Asthma & Immunology (ACAAI). Hives, also called urticaria, are raised, itchy, red or skin-tone welts. They turn white when you press their center. Hives can appear anywhere on the body, and people of all ages get them.

You can get hives in response to a wide range of triggers, such as:

• some foods
• medications
• pollen
• latex
• insects
• cold
• heat or the sun, in a condition known as solar urticaria

Hives are also associated with certain conditions, including:

• colds or other viral infections
• sinusitis, strep throat, or other bacterial infections
• mononucleosis
• hepatitis
• autoimmune diseases

Hives are generally not serious unless accompanied by a more systemic allergic reaction. Seek urgent medical attention if you have the following symptoms:

• trouble breathing or swallowing
• coughing
• wheezing
• dizziness
• abdominal pain or vomiting
• swelling of your face or tongue

How it’s treated: Hives often go away without treatment, except in cases of an allergic reaction. Antihistamines are the most commonly used medication for treatment of hives.

You may use both OTC and prescription antihistamines for hives caused by an allergic reaction. For initial treatment, you’ll likely be recommended a non-sedating antihistamine. Examples include loratadine (Claritin), cetirizine (Zyrtec), and fexofenadine (Allegra).

If those medications don’t get rid of the hives, you’ll also add a sedating antihistamine at night. Examples include diphenhydramine (Benadryl) and the prescription medication hydroxyzine (Atarax).

In some cases, oral steroids may be prescribed. Injections of the steroid betamethasone (Celustone) might also be needed to treat hives.

Shop for OTC treatments: Shop for non-sedating antihistamines, such as loratadine, cetirizine, and fexofenadine.

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Shop for sedating antihistamines, such as diphenhydramine.

Your little red bumps may be bug bites — especially if they itch like the devil. Common culprits in the insect kingdom include:

Fire ants

Fire ant bites are actually stings, which may appear as raised clusters. These raised, red bumps sometimes contain pus. They may be accompanied by welts, followed by blisters.

How it’s treated: Treatment includes a variety of antihistamines, cold compresses, and pain medication.

Oral pain medications that may provide relief include acetaminophen (Tylenol) and ibuprofen (Advil, Motrin). A topical pain medication that can be used is lidocaine (Solarcaine).

Shop for OTC treatments: Shop for antihistamines.

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Shop for cold compresses.

Shop for pain medications, including acetaminophen, ibuprofen, and lidocaine.

Mosquitoes

Mosquito bites can be hard to the touch. They can occur as solo bumps, or you may see several in a cluster. They may or may not turn red.

How it’s treated: The itch from mosquito bites can be reduced with topical use of witch hazel or hydrocortisone cream.

Shop for OTC treatments: Shop for witch hazel and hydrocortisone creams.

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Fleas

Fleabites appear in multiple clusters, each with three or four red, raised bumps. There’s a lighter red circle around each bump. The bumps may bleed.

If your bites fill with pus, you should have them checked by a doctor.

How it’s treated: Hydrocortisone creams and antihistamines are usually enough to reduce the itch.

Shop for OTC treatments: Shop for hydrocortisone creams and antihistamines.

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Chiggers

Chigger bites result in small, red, itchy bumps, each with a bright red dot in the center. They can cause intense itching.

How it’s treated: Itching may be reduced with hydrocortisone creams.

Shop for OTC treatments: Shop for hydrocortisone creams.

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Lice

Lice bites can occur on the head, in the pubic area, or on the body. The bites look like red or pink clusters. You may see eggs along with the bumps.

How it’s treated: Reducing the lice infestation by combing out the eggs, and using topical creams designed for this purpose, will help to eliminate the bumps.

Shop for OTC treatments: Shop for lice treatments. Also shop for lice combs.

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Bed bugs

Bed bug bites can look like red lines made up of dots, which may be flat or raised.

How it’s treated: The itching can be reduced with hydrocortisone creams and antihistamines.

Shop for OTC treatments: Shop for hydrocortisone creams and antihistamines.

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Scabies

Scabies leads to raised, red bumps which may appear along wavy lines. The wavy lines are made by the burrowing insects.

How it’s treated: Treatment requires a scabicide cream such as permethrin (Eilimite). It kills scabies mites and their eggs.

Shop for OTC treatments: Shop for scabies creams.

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General tips

The itching caused by most bug bites may be helped by:

• oral or topical corticosteroids
• a variety of OTC or prescription antihistamines, which may be taken orally or applied topically
• ice or cool compresses
• an application of calamine lotion

Remember that prevention, in the form of insect repellents and keeping your skin covered, is the most important step in keeping bloodthirsty critters away.

Shop for OTC treatments: Shop for antihistamines, such as loratadine, cetirizine, fexofenadine, and diphenhydramine.

Shop for cold compresses, calamine lotions, and insect repellents.

Psoriasis is a chronic condition that causes red, scaly patches to appear on the skin. One form of psoriasis, guttate psoriasis, is characterized by small reddish or pinkish spots that may also have a scaly quality. Spots are likely to occur on the trunk and limbs. Guttate psoriasis is the second most common type of psoriasis, following plaque psoriasis. It may cause hundreds of spots to occur at one time.

Triggers or risk factors for guttate psoriasis include:

• tonsillitis
• strep throat or other strep infections
• upper respiratory infection
• skin injury
• medications, such as beta-blockers or antimalarial drugs
• high levels of stress

How it’s treated: Topical ointments, such as corticosteroids, can be effective at reducing outbreaks. If the bumps are very widespread, they may also be cumbersome to apply. Phototherapy treatments may also be used. These treatments may involve ultraviolet light or a combination of ultraviolet light and a light-sensitizing medication such as psoralen.

Shop for OTC treatments: Shop for psoriasis treatments.

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There are several different types of skin cancer which may appear like red bumps on the skin. These include basal cell carcinoma (BCC) and Bowen’s disease. Skin cancer is typically caused by unprotected, chronic exposure to the sun.

Basal cell carcinoma (BCC)

Basal cell carcinoma (BCC) is the most common form of skin cancer. Basal cell carcinomas are abnormal growths which form in the skin’s basal cell layer. They often appear as one small and shiny red bump, and they can look like an open sore.

How it’s treated: BCCs must be removed surgically.

Bowen’s disease

Bowen’s disease is an early form of skin cancer. It appears on the surface of the skin and is also referred to as squamous cell carcinoma in situ. It resembles a reddish, scaly patch, which may ooze, crust over, or itch. In addition to sun exposure, Bowen’s disease may be caused by exposure to arsenic or human papilloma virus 16 (HPV 16). HPV 16 is the wart virus associated with cervical cancer.

How it’s treated: Patches caused by Bowen’s disease must also be removed surgically.

Vasculitis is a condition which causes inflammation of the blood vessels. This decrease in the flow of blood results on a wide range of symptoms, including:

• aches and pains
• weight loss
• night sweats
• rashes

There are many types of vasculitis, most of which are rare. Some of them have red skin bumps as a symptom, including:

Hypersensitivity vasculitis

Hypersensitivity vasculitis is also known as allergic vasculitis. It’s marked by red spots on the skin, which often appear on the lower legs. An outbreak may be triggered by infection or adverse reaction to medications such as antibiotics, anti-seizure drugs, and gout medications.

How it’s treated: In most cases, no treatment is required. Some people may be prescribed anti-inflammatory medications or corticosteroids to help with joint pain.

Kawasaki disease

Kawasaki disease, or mucocutaneous lymph node syndrome, is most often seen in children under five years of age. Symptoms include skin rash, swollen tongue, red eyes, and fever. Its cause is unknown.

How it’s treated: This condition can become dangerous if not caught and treated early. Treatment usually consists of intravenous immunoglobulin.

If you have an outbreak of red bumps on your legs, you’ll want to eliminate their itch as well as their physical presence. There are a number of at-home remedies you can try, including:

• Aloe vera gel. You can purchase aloe vera gel commercially or cut open the plant and use the sticky substance inside its leaves.
• Apple cider vinegar and white vinegar. When applied topically, either type of vinegar can help to soothe itchy skin.
• Calamine lotion. Calamine lotion can be applied topically on red bumps.
• Witch hazel. Simply pour witch hazel on the affected area.
• Oatmeal. Oatmeal contains chemicals called avenanthramides that reduce itching and inflammation. They also block the action of histamines — the chemicals in your body that cause allergic reactions. Try oatmeal compresses, ointments, or bath treatments. Treatments that use colloidal oatmeal are soothing for irritated or itchy skin.

Shop for OTC treatments: Shop for aloe vera gels.

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Shop for apple cider vinegar and white vinegar.

Shop for calamine lotions, and witch hazel.

Also shop for oatmeal treatments and colloidal oatmeal.

Normally, the presence of little red bumps on your legs isn’t a matter of concern. But skin conditions carry the risk of becoming more serious infections. Treat your rash as recommended by your doctor and keep an eye out for signs of infection, such as:

• increasing redness or swelling around the bumps
• redness streaking from the rash
• pain
• fever
• blisters

Rash on the legs

09/13/2021

Sometimes you can wake up and find rashes on your legs. Usually they are not given much importance, referring to the fact that they were bitten by a mosquito

or something similar. But this approach is an unforgivable mistake, because this rash can be not just an allergic reaction ,

but also the result of a serious illness. In order to prevent further complications, it is worthwhile to carefully understand the cause of its occurrence.

Types of rashes

Blisters, pustules, nodules, plaques, blisters, scales, spots - all of these apply to rashes. But separately we will consider such a type of rash as

hemorrhagic rash on legs . You can recognize it by dots, spots or stripes that are bright red, purple or black.

It is definitely difficult to say what caused this rash, because the list of diseases that can cause it is quite extensive.

This could be meningitis , hemophilia, von Willebrand disease, or some other hereditary or infectious disease.

The rash may be short-lived or may linger for quite some time. The rash usually disappears after a few days.

If the rash does not want to disappear, then some chronic disease may be the cause. As soon as you notice that you have a different

kind of rash, then do not be afraid to waste time and be sure to make an appointment with a doctor , because your health is much more important than any minutes spent.

Causes of the rash on legs

As mentioned above, it is impossible to say unequivocally what caused the rash. The body can react in this way to some

medicines or even to dust if you have not cleaned your house for a long time. As a rule, such a rash does not linger for a long time, but disappears at

as soon as possible after elimination of the cause of allergy .

Fungal diseases are another matter. If you have problems with hygiene or wear shoes of poor quality, then you may develop such fungal

diseases as ringworm or contact dermatitis , which in turn will cause an unnecessary rash on the toes . Legs legs may react with rashes