Don’t let the bugs bite… But when you’re bit, this is what you should do.

It’s is part of being human, but it’s so annoying: getting bit by insects. Of course, the most common is a mosquito bite, but there are thousands of little bugs in the world that want a piece of you or want some peace from you. Here are some of the most common bug bites identified by what the bites probably look like.

Pinkish welt with a lot of itching
Mosquitoes: Most of us are very familiar with mosquito bites. They are often found on legs and arms, but can be anywhere. Hard bumps, often with a red dot in the middle, are the usual appearance of these bites. Sometimes they look like blisters. For the most part, mosquito bites are harmless in the US but in other parts of the world, they are responsible for the spread of malaria, zika, West Nile and more. Insect repellent, full covering clothes, and removal of nearby standing water will usually decrease the problem.

Reddish bumps with bleeding
You will know when a horsefly bites you. It can feel being stabbed. It’s very painful, sore and itchy. They are very aggressive and will stay around until they have had some of you. Their bites are open sores so it’s a good idea to put antibacterial treatments onto any bites to prevent infection.

Redness, swelling, sometimes blisters
Ant bites are usually not too painful, but for someone who’s allergic or from fire ants, the bites can be dangerous. Someone who is allergic to wasp or bee stings might especially susceptible to an allergic response. If you feel nausea, dizziness, sneezing, wheezing, or any other severe allergic symptoms seek medical attention immediately.

Blood drops on your sheets or small red welts
If you have been traveling, it might be bed bugs. This is especially true if there are small blood stains on your sheets in the morning. It might take a while to notice. They are notoriously difficult to get rid of. Get some professional assistance exterminating your home.

Bites in pubic hair, armpits, scalp, or eyebrows
If you have itching “down there” with bluish-grey skin reactions, you might have lice. There will often be tiny white eggs in the hair as well. Itching can begin right away or might happen 2 weeks later. There are shampoos that will eliminate them.

Bulls-eye rash around a swollen red bite
Lyme disease is spread by ticks. There’s usually a bulls-eye ring around the bite mark. This should be seen by a doctor immediately. Lyme Disease can be very dangerous.

Two tiny puncture marks with redness and swelling
There are thousands of spiders, but two in particular are of concern in the US: the black widow and the brown recluse. If you are bit and then experience muscle cramps, swelling sweating, increased blood pressure, you might have been bitten by a poisonous spider. Get medical attention immediately. These bites can be fatal.

Large blister or welt on the skin
This is likely a blister beetle. A chemical that is in the beetle causes a painful skin reaction. This is no lasting skin damage, but don’t crush blister beetles on your skin. This can cause a larger skin reaction.

Pimple-like rash near joints or between fingers
These are scabies and they aren’t caused by a bite. The little mites burrow under the skin and eat human skin. They are easy to remove, but kind of gross. There’s no lasting damage as long as it’s handled early.

No matter what you saw or didn’t see bite you, if you feel nauseous, dizziness, have muscle pain, eyesight issues, or any type of difficulty breathing, visit the doctor immediately. Most of the time, bug bites are harmless, but there are a few that are severe enough to need medical attention.