What Is Crabs Disease?
Reviewed: Dr. Gromatzky
4. Diagnosis
The only way to know for sure if a person has crabs is to see a pubic louse or nit on the body. They are brownish or whitish-gray and look darker immediately after feeding. Nits are usually in clumps at the base of the hair. Because the insects and eggs are so small, it may be necessary to use a magnifying glass to see them.
Places to go for help in determining whether you have pubic lice include community health departments, reproductive health centers, and family doctors. A doctor or nurse will use a light microscope to identify adult lice and nits.
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