Scabies
The scabies mite burrows under the skin.  It can hardly be seen with the naked eye.  It belongs to the same family as the spider.

Common Symptoms:

Intense itching - usually at night.
Small bumps or rashes that appear in dirty-looking, small curling lines, especially on the penis, between the fingers, on the buttocks, breasts, wrists, thighs, and around the navel.
Often symptoms are not visible.  It may take several weeks for them to develop.

How scabies is spread:

It can be transmitted sexually, through casual contact such as touching or coming into contact with infested bedding and clothing.

Diagnosis:

Although people can diagnose themselves, diagnosis is often difficult.  Microscopic examination of a skin scraping or biopsy by a physician may be necessary.

Treatment:

Follow the directions on the package insert of a prescription medication.  Repeated neck-to-toe applications may be necessary.  Everyone who may have been exposed to scabies should be treated at the same time.  All bedding, towels, and clothing that may have been exposed should be thoroughly washed or dry cleaned, and the home should be thoroughly vacuumed.

Protection:

Limit the number of intimate and sexual contacts.