When should I see a doctor about a bug bite?

When should I see a doctor about a bug bite?

Daniel Behroozan (Dermatologist) gives expert video advice on: How can I avoid bug bites?; Why does it seem some people get bitten by bugs more than others?; What is 'scabies'? and more...

There are certain bug bites that can be dangerous. Sometimes a spider bite such as a Black Widow spider can actually cause death if it's severe enough. But if you have a bite that ulcerates, that's increasing in size, that's not getting better quickly, or if you have fevers, chills, nausea or vomiting, you should seek the advice of your doctor as soon as possible.