Fleas bite legs: what to apply? - briefly
Apply a topical antihistamine or 1 % hydrocortisone cream to soothe itching and inflammation, then cleanse the skin with mild soap and, if fleas remain, treat the area with a permethrin‑based insect repellent.
Fleas bite legs: what to apply? - in detail
Flea bites on the lower limbs often produce intense itching, redness, and small raised welts. Immediate care should focus on reducing inflammation, preventing infection, and alleviating discomfort.
First‑line topical options include:
- Hydrocortisone cream (1 %) – diminishes swelling and itch within minutes. Apply a thin layer to each bite no more than three times daily.
- Antihistamine ointments (e.g., diphenhydramine) – block histamine release, providing rapid relief from pruritus. Use as directed, avoiding broken skin.
- Calamine lotion – creates a cooling film that soothes irritation and dries excess moisture. Reapply after washing the area.
If the reaction is more severe, consider:
- Oral antihistamines such as cetirizine or loratadine to control systemic itching.
- Non‑steroidal anti‑inflammatory drugs (NSAIDs) for pain and swelling, following dosage guidelines.
- Antibiotic creams (e.g., mupirocin) when secondary bacterial infection is suspected—identified by increasing warmth, pus, or expanding redness.
Adjunctive measures improve outcomes:
- Clean the affected skin with mild soap and lukewarm water; pat dry gently.
- Apply a cold compress for 10‑15 minutes to constrict blood vessels and lessen swelling.
- Keep fingernails trimmed to prevent self‑inflicted lesions from scratching.
- Use breathable clothing to reduce friction and moisture accumulation.
Persistent symptoms beyond 48 hours, spreading lesions, or signs of infection warrant medical evaluation. A clinician may prescribe stronger corticosteroids, oral antibiotics, or a short course of systemic antihistamines based on severity.