How long does a bite from a clothing louse persist? - briefly
A bite from a clothing louse typically heals within three to seven days, though the associated redness and itching may linger a bit longer. Persistent irritation beyond a week suggests secondary infection or an allergic reaction and warrants medical evaluation.
How long does a bite from a clothing louse persist? - in detail
A bite from a clothing louse produces a small, erythematous papule that typically begins to itch within a few hours. The clinical course follows a predictable pattern:
- First 24 hours: Redness and mild swelling appear; itching is most intense.
- 24–72 hours: Inflammation peaks; the lesion may become a raised, tender bump.
- 3–7 days: Swelling and redness gradually diminish; itching lessens.
- Beyond 7 days: Most lesions resolve completely, leaving only faint discoloration. In rare cases, especially with vigorous scratching or secondary bacterial infection, the healing period can extend to 10–14 days.
Factors influencing duration include individual skin sensitivity, the number of bites, and whether treatment is applied. Topical corticosteroids, oral antihistamines, or soothing emollients can accelerate symptom relief and reduce inflammation. Absence of complications usually results in full resolution without scarring.