How do migraines associate with anorexia nervosa?

Very strongly: There is a very strong association between anorexia nervosa and migraines. The same holds true for bulimia nervosa and migraines. Whereas 12.5% of the general population suffer from migraine headaches , 75% of people with eating disorders suffer from migraine headaches. It is interesting to note that the eating disorder and the migraines typically start at the same time in any given individual.