Karla Flores was 18 when she started experiencing double vision. She knew something was wrong but struggled to find a diagnosis. Finally, she saw an ophthalmologist who referred her to a neurosurgeon.

Persistent back pain, often dismissed as muscular, can sometimes signal advanced breast cancer that has spread to the bones.

As a high school teacher and baseball coach, Steve Loutzenhiser is used to an active life, describing himself as “super healthy” and athletic. So he was surprised when a sudden bout of back pain ...