The fitness celebrity wrote on Facebook Tuesday about getting medical care for a “strange looking bump under my right eye."

Model and actress Christie Brinkley announced Wednesday that she has been diagnosed with basal cell carcinoma, a type of skin cancer.

Skin cancer is most often found on the arms or face (thanks, tank tops and long car rides). But now and then, a suspicious mole can pop up on body parts you’d never think to check.It’s easier to treat skin...