Ringworm
What is ringworm?
Ringworm is a skin infection caused by a fungus
that can affect the scalp, skin, fingers, toenails or foot. The rash can appear to be one small ring or several
separate C-shapes. It can be dry and scaly or wet and crusty. All types of
ringworm infection will cause itching and irritation. Ringworm on the scalp
will cause a bald spot with the infection in the center.
Who gets ringworm?
Anyone
can get ringworm. Children may be more susceptible to certain species of
ringworm while adults may be more susceptible to other varieties.
How are ringworm infections spread?
Transmission
of the fungus can occur by direct skin-to-skin contact with infected people or
pets, or indirectly by contact with items such as barber clippers, hair from
infected people, shower stalls, or floors. Ringworm is easily spread by touch
and can be transmitted from animals to humans. Animals with ringworm will often
have a bald patch where the infection is.
What are the symptoms of ringworm infections?
Ringworm
of the scalp usually begins as a small pimple, which becomes larger in size,
leaving scaly patches of temporary baldness. Infected hairs become brittle and
break off easily. Occasionally, yellowish crusty areas are seen. With ringworm
of the nails, the infected nails become thicker, discolored and brittle, or
they can become chalky and disintegrate. Ringworm of the body appears as flat,
spreading ring-shaped areas. The edge is reddish and may be either dry and
scaly or moist and crusted. As it spreads, the center area clears and appears
normal. Ringworm of the foot appears as a scaling or cracking of the skin,
especially between the toes.
How soon after infection do symptoms appear?
The
incubation period is unknown for most types of ringworm, however ringworm of
the scalp is usually seen 10 to 14 days after contact and ringworm of the body
is seen 4 to 10 days after initial contact.
Does infection with ringworm make a person immune?
Since so
many species of fungus can cause ringworm, infection with one species will not
make a person immune to repeat infections.
What is the treatment for ringworm infections?
Your
doctor may prescribe a fungicidal material to swallow as tablets, or powders
that can be applied directly to the infected areas. Griseofulvin is commonly
prescribed for treating fungus infections.
How can ringworm be prevented?
Towels,
hats, and clothing from an infected individual should not be shared with
others. Young children who are infected should have minimal close contact with
other children until effectively treated.