Stress, dehydration, and excess alcohol are all well-known causes of a headache. But there are other, less obvious reasons for pounding head pain—as one Australian woman discovered. After she...

David G. Armstrong, DPM, Ph.D., co-director of Keck Medicine of USC’s limb salvage program, had a patient with a problem. Post-surgery, the patient had developed necrotic tissue at the site of the...