For most insect bites, a cold compress and over-the-counter hydrocortisone cream are the fastest way to reduce itching and swelling. The basics work well: clean the area, cool it down, and apply something to calm the skin’s inflammatory response. What you reach for next depends on whether you’re dealing with a mild mosquito bite, a bee sting, or something that’s starting to look more serious.
First Steps Right After a Bite
Before applying anything, wash the bite with soap and water. This removes any remaining irritants and reduces your risk of infection. If a stinger is still embedded in the skin (honeybees leave theirs behind), scrape it out with the edge of a credit card or your fingernail. Avoid squeezing it with tweezers, which can push more venom into the skin.
Next, apply a cold compress. Place a cloth dampened with cold water, or wrapped around ice, on the bite for 10 to 20 minutes. Cold narrows the blood vessels in the area, which directly reduces both swelling and pain. You can repeat this several times throughout the day. Don’t place ice directly on skin without a barrier.
Best Over-the-Counter Topical Treatments
Once you’ve cleaned and cooled the bite, a topical treatment can keep symptoms from ramping up.
Hydrocortisone cream (1%) is the most effective option you can buy without a prescription. It’s a mild steroid that reduces inflammation and swelling at the bite site, which is what causes the redness and itch in the first place. Apply a thin layer directly to the bite. It works on mosquito bites, ant bites, flea bites, and mild reactions to bee or wasp stings.
Calamine lotion takes a different approach. Rather than reducing inflammation, it creates a cooling, soothing sensation on the skin that distracts nerve endings from the itch signal. It’s a good choice when you have multiple bites over a larger area, since you can apply it more liberally than hydrocortisone.
Lidocaine or benzocaine creams numb the area temporarily. These are most useful when a bite is painful rather than just itchy, such as after a wasp sting or fire ant bite. The numbing effect typically lasts 30 to 60 minutes.
If you only buy one thing to keep in your medicine cabinet for bites, hydrocortisone cream covers the widest range of situations.
Home Remedies That Actually Help
A baking soda paste can reduce itching, particularly for mosquito bites. Mix 1 tablespoon of baking soda with just enough water to form a thick paste, then apply it to the bite and leave it on for about 10 minutes before rinsing. The CDC specifically recommends this as a way to help reduce the itch response.
Oatmeal baths work similarly for widespread bites. Colloidal oatmeal (finely ground oatmeal sold at most pharmacies) added to a lukewarm bath soothes large areas of irritated skin. This is especially practical for children covered in mosquito bites after a summer evening outside.
One thing to avoid: scratching. It feels like a remedy, but it damages the skin barrier and introduces bacteria from under your fingernails. If you find yourself scratching unconsciously, covering the bite with a small bandage can help.
When Oral Antihistamines Make Sense
Topical treatments handle most bites, but if the itching is intense or the area around the bite has swollen noticeably, an oral antihistamine works from the inside to block the histamine your body releases in response to insect saliva or venom. A non-drowsy option like cetirizine (Zyrtec) or loratadine (Claritin) is the standard recommendation, since they last 24 hours and won’t make you sleepy. These are particularly useful at bedtime when itching tends to feel worse and can keep you awake.
Oral antihistamines are worth considering when you have multiple bites, when a single bite has caused a larger-than-usual local reaction (a red, swollen area several inches across), or when topical treatments alone aren’t cutting it.
Different Bites, Different Priorities
Most insect bites respond to the same general approach, but a few situations call for specific steps.
- Mosquito bites: Itching is the main issue. Hydrocortisone cream, calamine lotion, or a baking soda paste all work well. The bump typically peaks within a day and fades over the next few days.
- Bee and wasp stings: Pain and swelling are more prominent than itching. Remove any stinger first, then prioritize cold compresses and a pain-numbing cream. Hydrocortisone helps with the swelling that follows.
- Fire ant bites: These often produce small blisters filled with fluid. Leave the blisters intact, as they protect the healing skin underneath. Apply hydrocortisone to the surrounding redness.
- Tick bites: The priority is removing the tick completely with fine-tipped tweezers, grasping as close to the skin as possible and pulling straight up. Clean the area afterward and monitor for a rash over the following two weeks.
Normal Healing vs. Signs of Trouble
Most insect bites resolve on their own within a few days to a week. Some swelling and redness in the first 24 to 48 hours is a normal part of your immune system responding to foreign proteins in insect saliva or venom. This isn’t an infection.
Signs that a bite has become infected include skin that feels hot to the touch, increasing pain rather than decreasing pain over time, visible swelling that keeps expanding, or pus and fluid draining from the bite. A red streak extending outward from the bite is a hallmark of spreading infection and needs prompt medical attention. Fever combined with swollen glands after a bite also warrants a visit to your doctor.
Symptoms of insect-borne illnesses like Lyme disease or West Nile virus can develop up to two weeks after a bite. Fever, body aches, or an expanding circular rash in the days or weeks following a bite are worth getting checked, even if the bite itself healed normally.
Severe Allergic Reactions
A small percentage of people develop anaphylaxis after an insect sting, most commonly from bees, wasps, hornets, or fire ants. This is a whole-body allergic reaction that goes far beyond local swelling. Symptoms include hives or flushing across the body, swelling of the face, lips, or throat, wheezing or difficulty breathing, a rapid and weak pulse, dizziness or fainting, and nausea or vomiting.
Anaphylaxis is a medical emergency. Call 911 immediately. If the person carries an epinephrine autoinjector (EpiPen), help them use it right away. Don’t wait to see if symptoms improve on their own. People who have had a severe reaction to a sting in the past should always carry an autoinjector and consider wearing a medical alert bracelet.