I have also watched far too many of my brothers and sisters in arms return home carrying invisible wounds—physical pain, trauma, and post-traumatic stress that no number of medals or parades can heal.

Having either PTSD or migraine may increase your risk of developing the other condition. Genes, stressors, and childhood trauma may all play a role.

World Cup alpine skier Mikaela Shiffrin endured a horrific injury during the FIS World Cup race last year when she tumbled ...