By the time neurologist Suzanne O’Sullivan met a patient she calls Darcie, the 20-year-old woman was experiencing daily seizures so disabling she had barely left her home for a year.
Darcie expected to add epilepsy to her already long list of other diagnoses: migraine, anorexia, irritable bowel syndrome, autism, depression, anxiety, attention deficit/hyperactivity disorder, a fainting and dizziness problem called postural orthostatic tachycardia syndrome, or POTS, and a joint condition called hypermobile Ehlers-Danlos syndrome.
