Medically reviewed by Christine L. Larsen, MD Photophobia is an abnormal sensitivity to light. It is associated with dry eye disease, migraines (severe, recurrent headaches), and traumatic brain ...

The new study showed that the frequency of people with dark skin was still high in parts of Europe until the Copper Age (also ...

Like most human traits, blue eyes are determined by genes, and no two people have exactly the same hue. It works a lot like ...