Insect bites can commonly cause lumps (papules), itching (pruritus), and whealing (urticarial) of the skin.
There are a number of things that can be done to minimise discomfort the bites cause.
- Antihistamines – taking oral antihistamines will relieve the itch and swelling e.g. cetirizine 10mg once or twice a day.
- Mild steroid cream – hydrocortisone 0.5-2.5 per cent applied twice daily for a few days can reduce inflammation and itching
- Calamine lotion to affected areas
- Cooling the skin e.g. with a cold compress
The bites should usually settle within a few hours to a few days. It is important to avoid scratching the skin as this increases vulnerability to developing infection at the site of the bite.
If you notice pus or discharge in or around the bite, increased pain, redness or swelling, or swollen glands, then suspect infection. This may require treatment with oral antibiotics (usually flucloxacillin unless there is an allergy to penicillin) so consult a doctor as soon as possible.