Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started
My Medicine

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Select An Article

Common Skin Rashes

Font Size

How Is Granuloma Annulare Diagnosed?

The condition is diagnosed by a doctor who may use a skin biopsy to confirm the diagnosis.

How Is Granuloma Annulare Treated?

Treatment of granuloma annulare often is not necessary, except for cosmetic reasons. In some cases, steroid creams or ointments are used to help the bumps disappear. Some doctors may decide to freeze the lesions with liquid nitrogen or to inject steroids directly into the rings of bumps. Ultraviolet light therapy or oral drugs can be used in severe cases.

Lichen Planus and Your Skin

Lichen planus is a common skin disorder that produces shiny, flat-topped bumps that often have an angular shape and a reddish-purplish color. Lichen planus can occur anywhere on the skin but is often found on the insides of the wrists and ankles, the lower legs, the back, and the neck. Some people have lichen planus inside their mouth, genital region, hair, and nails. Thick collections of bumps may occur, especially on the shins.

Lichen planus occurs most often in adults aged 30 to 70. It is not common in very young or elderly people.

What Causes Lichen Planus?

In most cases, the cause of lichen planus is not known. However, lichen planus is linked to hepatitis C infection in some cases.

Medications to treat high blood pressure, heart disease, and arthritis can cause lichen planus-type rashes that are allergic reactions to those drugs. Lichen planus is not contagious.

What Are the Symptoms of Lichen Planus?

Signs and symptoms of the condition include shiny, flat-topped bumps that are purple or a reddish-purplish color. When it appears on the scalp, lichen planus may cause hair loss. Lichen planus of the nails can cause brittle or split nails.

How Is Lichen Planus Diagnosed?

A doctor can diagnose lichen planus by its distinctive appearance or with the use of a skin biopsy. In a skin biopsy, a small bit of skin is taken from the affected area and is sent to a lab for testing.

How Is Lichen Planus Treated?

Although lichen planus cannot be cured, its symptoms can be treated with anti-itch products such as antihistamines (for example, Benadryl, or diphenhydramine). If lichen planus affects only a small part of the body, medicated cream can be applied to the affected area. Drugs such as steroid injections, prednisone, other drugs to suppress the immune system, or retinoids may be prescribed in more severe cases.

Another treatment for lichen planus is light therapy. Talk to your doctor about which treatment is right for you.

Next Article:

Today on WebMD

Pictures and symptoms of the red, scaly rash.
woman with dyed dark hair
What it says about your health.
woman with cleaning products
Top causes of the itch that rashes.
atopic dermatitus
Identify and treat common skin problems.
itchy skin
shingles rash on skin
woman with skin tag
Woman washing face
woman washing her hair in sink
close up of womans bare neck
woman with face cream