Insect bites often cause one or more red bumps that are usually itchy and sometimes painful. Often there is a small hole in the middle of the bite, perhaps with the end of the sting sticking out. Apart from this local irritation, the bite is not usually dangerous provided the victim is not allergic to insect bites.

Bee and wasp stings are more likely to cause allergic reactions than other kinds of insect bites.

The skin becomes red, swollen, itchy and can be painful. These are the most common symptoms. Sometimes bites cause an allergic reaction. Bites can become infected by scratching. Look out for a rash or swelling that gets worse instead of better. If this happens, see a doctor

Call your doctor immediately if you notice any of the following symptoms:
the person has been stung by many insects at the same time
a rash or swelling that gets worse instead of better
if the site is red,tender and swollen
headache
dizziness
nausea (feeling sick)
pains in the chest
choking or wheezing
difficulty breathing.

These may be symptoms of allergy and can be life-threatening if the victim goes into shock. See a doctor immediately or dial 999 for an ambulance.