What does a bite from a clothing louse look like? - briefly
A clothing‑lice bite appears as a tiny, red, raised spot, usually 1–2 mm in diameter, that may be grouped in a line or cluster on exposed skin. The lesions are often itchy and can develop a small central puncture or slight swelling.
What does a bite from a clothing louse look like? - in detail
A bite from a garment louse (Dermestes spp.) appears as a small, red papule, typically 2–4 mm in diameter. The lesion often has a raised, inflamed rim surrounding a slightly pale or hemorrhagic centre. In the first 24 hours the spot may be intensely pruritic and may develop a tiny vesicle that ruptures, leaving a crusted lesion.
The bite is usually solitary, but multiple lesions can occur when several insects feed in close proximity. They tend to cluster on exposed skin such as the forearms, neck, and lower legs, where the insects have easy access to clothing fibers. The arrangement may be linear or irregular, reflecting the movement of the louse across the garment.
Typical symptoms include:
- Immediate itching or burning sensation
- Redness that peaks within 12–48 hours
- Possible swelling of the surrounding tissue
- Secondary irritation if the area is scratched, leading to excoriation or a small ulcer
Differential diagnosis should consider other arthropod bites (e.g., fleas, bed bugs), allergic reactions, and dermatological conditions such as papular urticaria. Key distinguishing features are the association with infested clothing, the uniform size of the lesions, and the absence of a central punctum often seen with bed‑bug bites.
Management focuses on symptomatic relief and removal of the infestation. Topical corticosteroids reduce inflammation; oral antihistamines alleviate itching. Cleaning or discarding contaminated garments, vacuuming living areas, and applying insecticidal powders to stored fabrics prevent re‑exposure. If lesions become infected, a short course of antibiotics may be required.
Recovery typically occurs within a week, leaving only mild hyperpigmentation that fades over several weeks. Persistent or worsening symptoms warrant medical evaluation to rule out secondary infection or alternative diagnoses.