Human Diseases Fact Sheet: 24 Facts

Sufferers of acid reflux disease occasionally report a distinct feeling of something stuck in their throat, often lasting for days. This happens because the acid causes the throat tissues to swell, creating a lump feeling.

Canker Sores are a mystery to modern medicine, they don't know why they happen and there is no cure.

Yellow fever came to the Americas aboard slave ships. Two hundred years later, it helped end slavery in Haiti. An epidemic broke out during the Haitian Revolution, killing two-thirds of the French army. It killed almost none of the slaves. France was therefore forced to surrender the island.

Marjolin's ulcer is a type of cancer that grows only on scar tissues and usually mostly from a burn injury. It is very aggressive and lethal.