Treating mosquito bites at home

Person-s-arm-up-close-with-multiple-mosquito-bites

Short answer

Most mosquito bites need only simple home care. Clean the area, cool it, treat the itch, and then leave it alone to heal. A typical bite is an itchy, raised bump that fades on its own within a few days. The main job of home care is to calm the itch and keep the skin intact, because a bite that gets scratched open is the one most likely to become infected (Sources 1, 2, 4).

You do not need prescription medicine or a clinic visit for an ordinary bite. Over-the-counter itch relief and a cold pack are usually enough.

Step by step

Wash the bite. Clean the bite and the skin around it with soap and water. This removes anything left on the surface and lowers the chance of infection if you have already scratched (Sources 1, 2).
Cool it down. Hold a cold pack, or a cloth dampened with cold water, against the bite for about 10 minutes to ease swelling and itching. Wrap ice or an ice pack in a light towel first, because ice placed straight on the skin can cause damage. Reapply as needed (Sources 1, 2, 4).
Treat the itch. Apply an over-the-counter anti-itch product such as calamine lotion, a baking soda paste, or 0.5% to 1% hydrocortisone cream several times a day until symptoms settle. To make a baking soda paste, mix about 1 tablespoon of baking soda with just enough water to form a paste, spread it on the bite, wait about 10 minutes, then rinse it off (Sources 1, 2, 3, 4).
Do not scratch. Scratching feels better for a moment but it can break the skin and let bacteria in, which can turn a simple bite into an infection. Keeping the itching to a minimum is the single most important step (Sources 1, 3, 4).

Products that help

A few inexpensive, widely available products cover almost every ordinary bite.

Oral antihistamines. A nonprescription antihistamine taken by mouth can reduce itching. Common options include cetirizine, fexofenadine (Allegra), and loratadine (Claritin). Follow the label, and check with a pharmacist about the right choice for a child (Source 1).
Hydrocortisone cream. A 0.5% or 1% hydrocortisone cream applied to the bite relieves itching and swelling (Sources 1, 4).
Calamine lotion. Calamine soothes the skin and calms the itch when dabbed on the affected area (Sources 1, 3).

You can also take an anti-itch antihistamine cream instead of, or alongside, a pill, but avoid doubling up on the same medicine without reading the labels first (Sources 2, 4).

Caring for many bites or a child’s bites

When bites are widespread, or when a child has several, a soak can be easier than treating each spot.

Oatmeal bath or paste. For many bites, add about 1 cup of oatmeal or finely ground oats (colloidal oatmeal) to a tub of warm water and soak for about 20 minutes. For a single stubborn bite, grind oats into a fine powder, mix with warm water into a thick paste, cover the bite for at least 10 minutes, then wipe it off with a clean towel (Source 4).
Keep a child’s nails short. Trim your child’s fingernails and gently help them not to scratch. Infected bites most often start when a child scratches or picks at a bite with dirty fingers, so short nails are a simple, effective safeguard (Source 5).

Cool packs and hydrocortisone are also safe, everyday tools for children, but check dosing with a pharmacist or pediatrician before giving any oral medicine. For more detail, see Mosquito bites in children and Preventing mosquito bites.

Preventing infection

An ordinary bite becomes a problem mainly when the skin is broken. To keep that from happening:

Do not scratch. If the bite has already been scratched open, wash it with soap and water and keep it clean (Sources 2, 4).
Cover a scratched or oozing bite with a clean bandage to keep dirt out (Source 4).
Watch the bite over the next few days. If it grows redder, larger, or more swollen, or if you see red streaks, yellowish fluid, or a fever, that can signal infection (Source 5).

If a bite shows those signs, see Infected mosquito bites for what to do next.

When home care is not enough

Home care handles the great majority of bites. See a doctor or a board-certified dermatologist if you have serious symptoms after a bite, such as a spreading rash, fever, or body aches, if bites keep multiplying or last well beyond a few days, or if you have any sign of an allergic reaction (Sources 1, 3, 4).

For a full list of warning signs and what to do, see When a mosquito bite needs a doctor.

Sources

Mayo Clinic, “Mosquito bites: Diagnosis and treatment” (home treatment: cold compress, calamine, baking soda paste, 0.5% to 1% hydrocortisone cream, oral antihistamines such as cetirizine, fexofenadine, and loratadine; keep itching to a minimum to avoid infection). https://www.mayoclinic.org/diseases-conditions/mosquito-bites/diagnosis-treatment/drc-20375314 (accessed 20 July 2026)
Centers for Disease Control and Prevention, “About Mosquito Bites” (wash with soap and water; apply an ice pack for 10 minutes to reduce swelling and itching; use an over-the-counter anti-itch or antihistamine cream; baking soda paste; avoid scratching). https://www.cdc.gov/mosquitoes/about/about-mosquito-bites.html (accessed 20 July 2026)
American Academy of Dermatology, “How to prevent and treat bug bites” (apply an ice pack or an over-the-counter anti-itch cream such as hydrocortisone, or take an oral antihistamine; see a dermatologist for serious symptoms such as a rash, fever, or body aches). https://www.aad.org/public/everyday-care/injured-skin/bites/prevent-treat-bug-bites (accessed 20 July 2026)
Cleveland Clinic, “Mosquito Bites” (do not scratch; wash with soap and water; apply an ice pack wrapped in a light towel for at least 10 minutes; antihistamines and hydrocortisone; oatmeal bath and paste; cover bites; when to contact a provider). https://my.clevelandclinic.org/health/diseases/17695-mosquito-bites (accessed 20 July 2026)
American Academy of Pediatrics, HealthyChildren.org, “Mosquito Bite” symptom guidance (cut a child’s fingernails short and help them not to scratch to prevent infection; infection signs include increasing redness, swelling, red streaks, yellowish fluid, or fever). https://www.healthychildren.org/English/tips-tools/symptom-checker/Pages/symptomviewer.aspx?symptom=Mosquito+Bite (accessed 20 July 2026)

This page is for general education and is not a substitute for professional medical advice. If you are worried about a bite or your symptoms, contact a healthcare provider.

Last reviewed 20 July 2026.