Understanding the Slang Expression "Having Crabs"

"Having crabs" is a colloquial term for pubic lice infestation (Pthirus pubis), not a literal crustacean. Pubic lice are tiny parasitic insects that infest coarse body hair, primarily in the genital area.

Key Facts

• Transmission: Almost always sexual contact; rarely via shared bedding/towels.
• Symptoms: Intense itching (worse at night), visible lice/nits on hair shafts, bluish bite marks.
• Diagnosis: Visual identification of lice or nits.
• Treatment: OTC permethrin 1% lotion or pyrethrin/piperonyl butoxide; prescription malathion 0.5% or ivermectin oral for resistant cases. Treat all recent sexual partners.
• Environmental: Wash bedding/clothing in hot water (≥130°F) and dry on high heat; items that can't be washed can be sealed in plastic for 2 weeks.

Important Notes

• Condoms do not fully protect (lice live on hair outside condom coverage).
• Not a sign of poor hygiene.
• Co-test for other STIs (chlamydia, gonorrhea, syphilis, HIV).

See a clinician for confirmation and treatment guidance.