Itching is the primary symptom but individuals may notice orange debris, which is crab excreta. Also, a nondescript rash may be generated by allergy to the crabs combined with scratching. They may cause individual itchy bumps on the chest. The latter should prompt a look at recently-worn clothing. Presumptive treatment can be considered if circumstances suggest this infestation.
Treatment is identical to that for pubic lice.
The head louse is a problem mainly for children and occasionally causes mini-epidemics in schools. Head lice cause scalp itching and can be found at the scalp line near the ears and the back of the head. Excessive shampooing may make them difficult to find. Treatment Treatment is straightforward. Shaving is unnecessary.