(Article by Lisa Stark from ABCNews) It was blinding headaches that sent the 46-year-old New Yorker running to her doctor. Alarmed, her physician did blood work and ordered an expensive MRI of the brain, as well as another kind of brain scan. Everything checked out as normal. There was no apparent explanation for the sudden pounding in the patient's head, a pounding that was not eased by medications. Stumped, the doctor sent her to a neurologist, Dr. Orly Avitzur of Terrytown, N.Y., who finally unraveled the mystery. "When I went to examine her and simply touched her scalp, she pulled away and winced when my fingertips touched her quite gently," Avitzur said, describing the unnamed patient, a social worker. Avitzur took a closer look and noticed something unusual. "She had hundreds of these tightly braided hair braids," she said. It turns out the woman was suffering not from a neurological condition, but from a side effect of her new hair extensio