The topic Infestation by Body Crabs you are seeking is a synonym, or alternative name, or is closely related to the medical condition Pediculosis.

Quick Summary:

• Pediculosis is an infestation caused by lice that live on the hairy parts of the body. Lice are parasites (small insects) that live on human blood, in the clothing and bedding of affected humans, causing severe itching
• There are primarily three types of lice that reside and feed on blood at different locations of the human body. These include:
  • Pediculus capitis or head louse that live in the hair on the head and feed on the human scalp
  • Pediculus corporis or body louse found along the seams of infrequently changed and washed clothing
  • Pediculus pubis (or pthirus pubis) which are pubic louse (or body crab) found in the pubic hair, but may also occur in the facial hair such as the eye lashes and eye brows, chests, armpits, and abdomen
• Pediculosis infestation can easily spread from one individual to another by close physical contact and through fomites (inanimate objects which are capable of spreading disease) such as combs, clothes, hats, and cosmetic applicators
• Pubic Lice Infestation can be transmitted without or during sexual activity. It can be  associated with other STDs and serve as an indicator for the same
• Intense itching in the affected areas is the most common symptom of the condition. The constant scratching may make the skin raw and susceptible to secondary bacterial infections
• Medicated shampoos containing insecticidal compounds are used to treat head lice. Environmental control measures and personal hygiene can help treat and control Pediculosis affecting the body and pubic region. With proper treatment, Pediculosis is an entirely manageable condition

Please find comprehensive information on Pediculosis regarding definition, distribution, risk factors, causes, signs & symptoms, diagnosis, complications, treatment, prevention, prognosis, and additional useful information HERE.