My hair is growing back. Little wisps have suddenly appeared around my face, darker brown than the rest of my hair, like someone accidentally scuffed a marker across my temple. I didn’t see them a week ago, but now they are there, and I wonder what else might be being restored. The hair began falling out in clumps last winter, long strands whirling around the shower floor and clogging up my detangler brush. I finally went to the dermatologist; she asked if there had been any stressors in my…