Mosquito Bite Relief: How to Stop the Itch Fast

To stop a mosquito bite itching in minutes, clean it, cool it and keep your nails off it.

• Wash the bite and the skin around it with soap and water.
• Apply a cold pack or ice wrapped in a cloth for about 10 minutes. Repeat as needed.
• Try a baking soda paste if you like, left on for 10 minutes then rinsed. Skip it if it stings.
• Use an anti itch cream or antihistamine cream, following the label.
• Do not scratch. Scratching releases more histamine, makes the itch worse and can break the skin.

Cold works quickly because it numbs the nerve endings and calms swelling. A cold, wet cloth or a chilled spoon works if you have no ice pack. Never put ice straight on the skin, since it can cause cold burns.

The itch is your immune system reacting to mosquito saliva, so every remedy works by calming that reaction or distracting the nerves.

• The cause: the itchy bump forms because your body reacts to saliva the mosquito injects while feeding.
• Histamine: your skin releases histamine, which causes the redness, swelling and itch. Antihistamines block it.
• Cold: numbs nerve endings and shrinks swelling for a short time.
• Steroid cream: hydrocortisone calms the local immune reaction over a few hours.
• Scratching: feels good for seconds, then releases more histamine and makes the itch return stronger.

The two most useful creams for mosquito bites are 1% hydrocortisone, which calms swelling and itch, and calamine lotion, which cools and soothes the skin. Both are sold without a prescription in most countries.

• 1% hydrocortisone cream: a mild steroid that reduces redness, swelling and itch. Apply a thin layer up to the number of times the label allows.
• Calamine lotion: a pink lotion that dries on the skin and gives a cooling feeling. Good for children and for many bites.
• Anti itch gels with pramoxine or menthol: numb or cool the skin for short term relief.
• Antihistamine creams: can help, but some people get skin irritation, so do not use them over large areas.

Do not use creams on broken or infected skin, and check the label before using any cream on babies and young children.

An oral antihistamine is the best option when you have many itchy bites, large swollen bites or itching that keeps you awake. Antihistamines block histamine, the chemical your body releases in response to mosquito saliva.

• Non drowsy types, such as cetirizine, loratadine or fexofenadine, are good for daytime use.
• Drowsy types, such as diphenhydramine, can help at night when itching disturbs sleep, but cause sleepiness.
• People who react strongly sometimes take a non drowsy antihistamine before going outdoors, after checking with a pharmacist.

Always follow the label for the dose, especially for children, and ask a pharmacist if you take other medicines or have a health condition.

Simple cooling remedies work best at home, while many popular tricks have little or no evidence behind them.

Which Remedies Are Safe for Babies?

For babies, stick to gentle options: wash the bite, use a cool damp cloth and keep the baby's nails short. Do not give honey to a child under one year old, and ask a doctor or pharmacist before using any cream or medicine on a baby. Long, light clothing and netting over strollers prevent most bites.

Brief, controlled heat may reduce itching for some people, but a hot spoon is not a safe way to do it. Heat seems to overload the nerve endings and may break down some of the proteins in mosquito saliva. A 2011 study tested a device that warmed the skin to about 51°C (124°F) for 3 to 6 seconds, and people reported much less itching within minutes, though the study had no comparison group.

• Hot spoon: the temperature cannot be controlled, so it is easy to burn the skin. Do not use it on children.
• Heated bite devices: reach a set temperature for a few seconds. They may help some adults, but follow the instructions exactly and avoid them on broken skin.

A cold pack gives similar relief with no risk of a burn, so it is the safer first choice.

Mosquito bites cannot disappear overnight, but you can help them settle in a day or two and heal within about three to four days. The key is to calm the reaction early and avoid scratching.

• Use a cold pack and an anti itch cream as soon as you notice the bite.
• Take a non drowsy antihistamine if you have many bites.
• Keep nails short, and cover bites with a small bandage at night if you scratch in your sleep.
• Keep the skin clean and moisturized so it heals well.
• Do not pop a bite or blister, since broken skin can get infected and leave a mark.

Dark marks after bites, common on brown and black skin, fade over weeks to months. For how bites normally look and change, see our guide to mosquito bites.

Children often get bigger, puffier bites, and some develop Skeeter syndrome, a large local allergic reaction with swelling, warmth and redness that can spread several centimeters. It looks alarming but usually settles within a few days. Our guide to mosquito bite allergy explains Skeeter syndrome and how to tell it from infection.

• Use cold packs, calamine lotion and an oatmeal bath for children.
• Ask a pharmacist about an antihistamine dose that suits the child's age and weight.
• Keep nails short and dress children in long, light clothing outdoors.

See a doctor if swelling is very large, affects the eye area or comes with fever.

The best relief is fewer bites. Use an EPA registered insect repellent plus cover up. Look for one of these active ingredients on the label:

• DEET, picaridin (also called icaridin) or IR3535.
• Oil of lemon eucalyptus or para menthane diol (PMD), which should not be used on children under 3 years old.

Wear loose, long sleeved shirts and long pants, keep window and door screens in good repair and empty standing water around the home once a week. Apply sunscreen first and repellent second, and always follow the label.

Most mosquito bites need no medical care, but see a doctor if a bite looks infected or you feel unwell after being bitten.

• Redness, warmth, pus or red streaks spreading from the bite.
• Fever, headache, body aches, rash or joint pain in the two weeks after bites, especially after travel.
• Swelling of the face, lips or throat, hives all over the body or trouble breathing. Call emergency services.
• A bite that has not improved after a week.

This information is for general education and is not medical advice.