What Causes Hives?

Read Transcript

Hives are due to hypersensitivity reaction within your immune system meaning that something has happened whether it's from stress or something you ate or a cold or a flu, it could be absolute anything even a parasite just anything at all can cause this immune system to become hypersensitive and there are cells called mast cells that will release the substance called histamine that lead to these red spots that are very itchy on your skin.

One thing about hives is that they tend come and go within 24 hrs so the hives you have or the red spots will start to fade and then you'll make new ones and that's one of the classic findings of hives.