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Ringworm
Dermatophytid; Tinea
Ringworm is a skin infection due to a fungus or yeast. Often, there are several patches of ringworm on the skin at once. The medical name for ringworm is tinea.
Causes
Ringworm is common, especially among children. But, it can affect people of all ages. It is caused by a fungus or yeast, not a worm like the name suggests.
Many bacteria, fungi, and yeast live on your body. Some of these are useful, while others can cause infections. Ringworm occurs when a type of fungus or yeast grows and multiplies on your skin.
Ringworm can spread easily from one person to another. You can catch ringworm if you touch someone who has the infection, or if you come into contact with items contaminated by the fungus, such as combs, unwashed clothing, and shower or pool surfaces. You can also catch ringworm from pets that carry the fungus. Cats are common carriers.
The fungus that causes ringworm thrive in warm, moist areas. Ringworm is more likely when you are often wet (such as from sweating) and from minor injuries to your skin, scalp, or nails.
Ringworm can affect the skin on your:
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Beard,
tinea barbae
Tinea barbae
Folliculitis is inflammation of one or more hair follicles. It can occur anywhere on the skin.
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Body,
tinea corporis
Tinea corporis
Ringworm is a skin infection that is caused by fungi. It is also called tinea. Related skin fungus infections may appear:On the scalpIn a man's bear...
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Feet,
tinea pedis
(also called athlete's foot)
Tinea pedis
Athlete's foot is an infection of the feet caused by fungus or yeast. The medical term is tinea pedis, or ringworm of the foot.
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Groin area,
tinea cruris
(also called jock itch)
Tinea cruris
Jock itch is an infection of the groin area caused by fungus or yeast. The medical term is tinea cruris, or ringworm of the groin.
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Scalp,
tinea capitis
Tinea capitis
Ringworm of the scalp is a fungal infection that affects the scalp. It is also called tinea capitis. Related ringworm infections may be found:In a m...
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References
Habif TP. Superficial fungal infections. In: Habif TP, ed. Clinical Dermatology: A Color Guide to Diagnosis and Therapy . 6th ed. Philadelphia, PA: Elsevier Mosby; 2016:chap 13.
Hay RJ. Dermatophytosis (ringworm) and other superficial mycoses. In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases . 8th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 268.
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Dermatitis, reaction to tinea - illustration
This picture shows a skin inflammation of the fingers with multiple blisters (vesicles) caused by an allergic reaction to a fungal infection (tinea corporis). (Image courtesy of the Centers for Disease Control and Prevention.)
Dermatitis, reaction to tinea
illustration
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Ringworm, tinea corporis on an infant's leg - illustration
This child's leg shows a classical-appearing ringworm lesion with central clearing and a slightly raised red border.
Ringworm, tinea corporis on an infant's leg
illustration
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Ringworm, tinea capitis - close-up - illustration
In the scalp, fungal infections often form circular, scaly, inflamed patches. Frequently, there can be temporary hair loss (hair returns when infection clears but if treatment is delayed and scarring results, permanent hair loss can be seen). This is a classical example of ringworm (tinea capitis) in a young child.
Ringworm, tinea capitis - close-up
illustration
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Ringworm, tinea on the hand and leg - illustration
This is a picture of ringworm (tinea) on the hand and leg. Tinea is a fungal infection of the skin. Ringworm is not seen as frequently in adults as in children, but when conditions are conducive to growth, the fungus can flourish.
Ringworm, tinea on the hand and leg
illustration
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Ringworm, tinea manuum on the finger - illustration
This is a picture of ringworm, tinea manum, on the finger. This fungal infection is inflamed and scaly.
Ringworm, tinea manuum on the finger
illustration
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Ringworm, tinea corporis on the leg - illustration
Ringworm is a fungal infection of the skin. It usually produces a ring-shaped lesion which appears to clear in the center. The edges of the lesion may be slightly raised and often itch. Central clearing can be seen in some of the infected areas on the leg of this person.
Ringworm, tinea corporis on the leg
illustration
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Tinea (ringworm) - illustration
Ringworm is a common skin disorder, especially among children, but may occur in people of all ages. It is caused by mold-like fungi (dermatophytes).
Tinea (ringworm)
illustration
-
Dermatitis, reaction to tinea - illustration
This picture shows a skin inflammation of the fingers with multiple blisters (vesicles) caused by an allergic reaction to a fungal infection (tinea corporis). (Image courtesy of the Centers for Disease Control and Prevention.)
Dermatitis, reaction to tinea
illustration
-
Ringworm, tinea corporis on an infant's leg - illustration
This child's leg shows a classical-appearing ringworm lesion with central clearing and a slightly raised red border.
Ringworm, tinea corporis on an infant's leg
illustration
-
Ringworm, tinea capitis - close-up - illustration
In the scalp, fungal infections often form circular, scaly, inflamed patches. Frequently, there can be temporary hair loss (hair returns when infection clears but if treatment is delayed and scarring results, permanent hair loss can be seen). This is a classical example of ringworm (tinea capitis) in a young child.
Ringworm, tinea capitis - close-up
illustration
-
Ringworm, tinea on the hand and leg - illustration
This is a picture of ringworm (tinea) on the hand and leg. Tinea is a fungal infection of the skin. Ringworm is not seen as frequently in adults as in children, but when conditions are conducive to growth, the fungus can flourish.
Ringworm, tinea on the hand and leg
illustration
-
Ringworm, tinea manuum on the finger - illustration
This is a picture of ringworm, tinea manum, on the finger. This fungal infection is inflamed and scaly.
Ringworm, tinea manuum on the finger
illustration
-
Ringworm, tinea corporis on the leg - illustration
Ringworm is a fungal infection of the skin. It usually produces a ring-shaped lesion which appears to clear in the center. The edges of the lesion may be slightly raised and often itch. Central clearing can be seen in some of the infected areas on the leg of this person.
Ringworm, tinea corporis on the leg
illustration
-
Tinea (ringworm) - illustration
Ringworm is a common skin disorder, especially among children, but may occur in people of all ages. It is caused by mold-like fungi (dermatophytes).
Tinea (ringworm)
illustration
Review Date: 4/14/2015
Reviewed By: Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.
