Applying a sunscreen may ... been associated with photosensitivity, she says. "The exact reaction to sunlight exposure depends on the drug being used," she says. "With some medications, sunlight ...

Its chemical nature may also increase photosensitivity in ... among the most common causes of contact dermatitis. Sensitive skin types should avoid sunscreens that list this ingredient.

The American College of Rheumatology (ACR) loosely defines photosensitivity as "a skin rash as a result of unusual reaction to sunlight." Beyond skin rashes that can develop, exposure to the sun can ...