Family Business

The playwright and actress Halley Feiffer doesn’t know how she got chronic Lyme disease, but she thinks it was from a tick on Martha’s Vineyard. Two years ago, she was acting in an Off Broadway play and could barely get through the second act. “Profound fatigue, profound brain fog. I couldn’t remember the word for, like, spoon. I couldn’t write,” Feiffer said recently. She was leaving a clinic on Park Avenue South, where, as part of her treatment, she’d just been injected with an antioxidant that makes her feel “like a superhero.”