The brown recluse and black widow are the most common venomous spiders in the U.S.. What are their habitats? Know how to prevent a bite.

Granuloma annulare causes a rash that’s easily mistaken for ringworm. This rash forms a clear circle with small, firm, ...

Dermatologists break down the most common circular rashes that aren’t ringworm, including hives, lupus, and atopic dermatitis ...

Scientists are raising the alarm that yellow fever, a dangerous disease transmitted by mosquitoes, could become the cause of ...

Scientists are warning that yellow fever, a dangerous disease transmitted by mosquitoes, could potentially ignite a global ...

The measles rash usually doesn’t appear for more than a week after someone has been exposed. Other symptoms are better early ...