MC looks like small flesh-colored or pink dome-shaped bumps. They are
usually shiny in appearance, and each bump typically has a small indentation
in the peak of its dome. The bumps usually form in clusters, notably on
the thighs, buttocks, groin and lower abdomen, and may occasionally appear
on the external genital and anal region and on the face and eyelids.
MC lesions can cause itching or tenderness in the area, but in most cases
the lesions cause few problems. Untreated lesions can last from two weeks
to five years.
People with compromised immune systems, including those infected with
HIV, can experience severe MC lesions, so-called giant lesions, and often
have a much wider spread of lesions.
Very often, a healthcare professional can diagnose MC simply by looking
at the bumps. Sometimes, a specimen needs to be collected from one of
the bumps for further analysis. Collecting a specimen is relatively painless,
and results from the laboratory are often available within a week.
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