Most cases of swelling from bug bites are minor and will pass on their own within several weeks, if not days, but there are also plenty of simple treatments that can expedite the process. Washing the area quickly after being bitten is normally effective in accelerating the healing process so that swelling can go down as soon as possible. Ice packs or any sort of cold will almost universally aid in reducing swelling, and a homemade baking soda paste may also be applied onto the bite and tends to be effective in easing swelling and other bug bite symptoms. If swelling does not respond to these home remedies, use antihistamines or anti-inflammatory over-the-counter medicines. Severe cases of swelling from bug bites, such as one caused by allergic reaction, tend to be much rarer, but cannot be aided by normal treatments and will typically need medical help.

Cleaning the bug bite as soon as possible will aid greatly in reducing swelling by keeping the area clear of infection. Soap and water will often be adequate; then, pat the area dry with a towel to reduce the possibility of tissue paper debris getting clogged in the bite. If an infection happens to occur, antibiotics may be necessary.

Ice packs of any sort are often the simplest and quickest measure for reducing swelling from bug bites. This can include cold compresses, cloths filled with ice, or anything that will lower the temperature of the area and cause the blood vessels to constrict. It is usually advisable not to keep the ice in contact with one's skin for much longer than approximately ten minutes.

You can make a baking soda paste to apply to the bite area. Make any amount of paste, but ideally aim for a three-to-one ratio of baking soda to water. The paste will alleviate swelling from bug bites as well as other symptoms such as itching while it dries, and you can apply it up several times a day. This treatment is mild and safe to use for children or those with sensitive skin.

Over-the-counter medications can also aid in reducing swelling from bug bites. Anti-inflammatory medicines, such as ibuprofen, will usually be enough to reduce swelling. In worse cases, take antihistamines.

Severe swelling due to allergic reaction is much rarer, but usually requires prompt medical attention when it does occur. Excessive swelling can occur either in the general area of the bite, such as the arm, or in the face, lips or tongue. This will usually accompany other symptoms, such as feeling lightheaded or a breakout of hives.