A cold compress is the simplest and most effective first step for any bug bite, and over-the-counter hydrocortisone cream is the most widely recommended topical treatment for itch and swelling. Beyond those two staples, several other options can help depending on how many bites you have, how badly they itch, and what type of insect got you.
Most bug bites itch because your immune system reacts to proteins in the insect’s saliva. When a mosquito feeds, for example, it injects saliva into your skin, and your body responds by releasing histamine and other inflammatory compounds. Histamine is what causes the familiar red, swollen, itchy bump. Everything on this list works by interrupting some part of that process.
Ice or a Cold Compress
The CDC recommends applying an ice pack for 10 minutes to reduce swelling and itching, then reapplying as needed. Cold narrows blood vessels in the area, which limits how much inflammatory fluid pools under the skin. It also temporarily dulls nerve signals, giving you a break from the itch. Wrap the ice in a thin cloth rather than pressing it directly against your skin.
Hydrocortisone Cream
Over-the-counter hydrocortisone cream at 1% strength is specifically licensed for treating insect bite reactions. It works by dialing down your skin’s inflammatory response, which reduces both the redness and the urge to scratch. Apply a thin layer directly to the bite. You can reapply two or three times a day for a few days. For most ordinary mosquito, ant, or fly bites, this is the single most effective thing you can put on the spot.
Calamine Lotion
Calamine lotion contains calamine and zinc oxide suspended in a liquid base. When you dab it on, the liquid component evaporates and pulls heat away from your skin, creating a noticeable cooling sensation that soothes the itch. Many formulations also include menthol, which activates cold-sensing receptors in your skin for additional relief, or a small amount of phenol, which has a mild numbing effect. Calamine works best when you have multiple bites across a wide area, since you can apply it broadly without worrying about using too much of a medicated cream.
Oral Antihistamines
If you have several bites that are keeping you up at night, or if a single bite is producing an outsized welt, an oral antihistamine can help from the inside out. Non-drowsy options like cetirizine (Zyrtec) or loratadine (Claritin) block the histamine your body releases at the bite site. These are especially useful when topical treatments alone aren’t cutting it, or when bites are in spots that are hard to keep cream on, like your ankles or behind your ears.
Topical Numbing Products
Several over-the-counter products contain local anesthetics like lidocaine or benzocaine that temporarily numb the skin around a bite. These don’t reduce swelling, but they can stop the itch-scratch cycle for an hour or two. They’re a reasonable option when itching is your main problem and you don’t have significant swelling. Some products combine a numbing agent with an antiseptic, which can help keep a scratched-up bite clean.
Oatmeal Baths for Multiple Bites
When you’re covered in bites from head to toe, treating each one individually isn’t practical. A colloidal oatmeal bath can calm widespread itching all at once. Use about half a cup to one cup of colloidal oatmeal (sold in packets at most drugstores) dissolved in a full tub of lukewarm water. Soak for 15 to 20 minutes. The finely ground oatmeal forms a protective film on your skin that helps lock in moisture and reduce irritation. Keep the water lukewarm, not hot. Hot water can intensify itching.
What Not to Put on a Bite
Skip anything that could irritate the skin further or introduce bacteria. Rubbing alcohol dries and stings. Household cleaners and undiluted essential oils can cause contact irritation on top of an already inflamed spot. For tick bites specifically, the CDC warns against applying petroleum jelly, nail polish, or heat to a still-attached tick. These methods can agitate the tick and force infected fluid into your skin. Instead, use fine-tipped tweezers to grasp the tick as close to your skin as possible and pull straight up with steady, even pressure.
Tick Bites Need Extra Attention
Tick bites are different from other bug bites because ticks can transmit diseases. If you find a tick attached to your skin, remove it immediately with clean, fine-tipped tweezers. Don’t twist or jerk. Pull straight up. After removal, clean the bite area and your hands with soap and water or rubbing alcohol. Dispose of the tick by placing it in a sealed container, wrapping it in tape, flushing it, or dropping it in alcohol. Never crush a tick with your bare fingers.
After removing a tick, watch the area over the following weeks. If you develop a rash, especially one that expands in a ring shape, or if you get a fever, see a doctor and mention the tick bite, when it happened, and where you think you picked it up.
Signs a Bite Needs More Than Home Treatment
Most bug bites resolve on their own within a few days. But scratching can break the skin and let bacteria in, turning a minor bite into an infection. Watch for these signs that something more is going on:
- Warmth or redness spreading outward from the bite (on darker skin tones, look for a change in color or texture rather than redness)
- Increasing pain rather than fading itch
- Swelling that keeps growing instead of shrinking over a day or two
- Pus or fluid leaking from the bite
These suggest a secondary skin infection that may need treatment beyond what you can do at home.
In rare cases, a bite or sting triggers a severe allergic reaction. Symptoms include difficulty breathing, swelling of the tongue or throat, a hoarse voice, wheezing, persistent dizziness, or collapse. In children, watch for sudden paleness and floppiness. Abdominal pain and vomiting after an insect sting are also warning signs of anaphylaxis. This is a medical emergency.