What are JAK inhibitors & how can they be used to treat Alopecia Areata? Dr Jemma Boyle has has alopecia since she was 10 years old, which began as small bald patches which she says could be easily hidden. By her late teens, it began to get worse & more obvious. At the age of 30, she first lost all of her hair. This then grew back, then she lost it again.She is a Doctor who specialises in breast surgery & cancer research, who has been using JAK inhibitors to treat her own conditio...