How to detect pubic lice? - briefly
Examination of the pubic region for tiny crab‑shaped insects or their translucent eggs attached to hair shafts reveals infestation. Persistent itching or a reddish rash, confirmed with a magnifying lens, further supports diagnosis.
How to detect pubic lice? - in detail
Pubic lice, also known as crab lice, inhabit the coarse hair of the genital region, perianal area, thighs, chest, and occasionally facial hair. The insects are visible to the naked eye as tiny, crab‑shaped organisms measuring 1–2 mm. Detection relies on direct observation of the parasites, their eggs (nits), or the characteristic skin irritation they cause.
Key indicators include:
- Live lice attached to hair shafts; they move slowly and may be seen crawling.
- Nits adhered firmly to hair shafts, appearing as tiny, oval, white or yellowish shells positioned close to the scalp or skin surface.
- Small, red or pink papules and tiny puncture marks resulting from bites, often accompanied by itching.
Effective examination procedures:
- Conduct a visual inspection in a well‑lit area. Use a magnifying lens (10× or higher) to enhance detail.
- Separate hair strands with a fine‑toothed comb, moving from the root toward the tip. Examine the comb and hair for lice and nits after each pass.
- Inspect surrounding skin for erythema, papules, or excoriations. Note any linear patterns of irritation that may follow hair growth direction.
- If visual confirmation is uncertain, collect a sample of hair with attached debris and send it to a laboratory for microscopic analysis. Microscopy reveals the morphology of adult lice and nits, confirming identification.
Additional considerations:
- Examine clothing, bedding, and towels for transferred lice or nits, especially after close contact with an infected person.
- Repeat the inspection after 48–72 hours, as newly hatched lice may become visible only after the initial examination.
- Document findings with photographs or detailed notes to aid in treatment monitoring and potential medical consultation.