What should be applied to adult bedbug bites? - briefly
Apply a low‑potency corticosteroid cream (e.g., 1 % hydrocortisone) to the bite to reduce inflammation. An oral antihistamine such as diphenhydramine can be taken to alleviate itching.
What should be applied to adult bedbug bites? - in detail
For a bite from an adult Cimex species, the primary goal is to reduce inflammation, relieve itching, and prevent secondary infection.
A topical corticosteroid, such as 1 % hydrocortisone cream, applied two to three times daily, dampens the local immune response and limits swelling. Over‑the‑counter antihistamine ointments (e.g., diphenhydramine) can be layered beneath the steroid for additional itch control.
If the lesion is extensive or the pruritus is severe, a short course of oral antihistamines—cetirizine 10 mg or loratadine 10 mg once daily—offers systemic relief. Non‑steroidal anti‑inflammatory drugs (ibuprofen 200‑400 mg every 6–8 hours) may be added to address pain and inflammation.
When skin integrity is compromised, apply a mild antiseptic (e.g., 2 % chlorhexidine solution) to the area before covering it with a sterile non‑adhesive dressing. This step reduces bacterial colonization and supports healing.
In cases of pronounced allergic reaction—rapid spreading erythema, wheezing, or hypotension—administer epinephrine intramuscularly (0.3 mg of 1 : 1000 solution) and seek emergency medical care immediately.
For individuals with persistent lesions beyond a week, or signs of infection such as purulent discharge, fever, or increasing pain, a prescription‑only antibiotic (e.g., cephalexin 500 mg three times daily) should be considered after clinical evaluation.
Maintain skin hygiene by washing the affected region with mild soap and lukewarm water twice daily. Avoid scratching, as mechanical trauma can exacerbate inflammation and introduce pathogens.
Finally, address the source of infestation: eliminate bedbugs through professional pest control, wash bedding at ≥ 60 °C, and seal personal items in airtight containers. Removing the vector prevents new bites and reduces the need for repeated topical treatment.