Hey Ben,I agree with Lanie and from reading the side effects of many of the meds I have been on over the years - hair loss often pops up as a possible side effect.
From what I know, stress can play a role in diffuse hair loss. Stress-induced loss ordinarily regrows within a year of eliminating the cause. The amount of hair lost can depend on the severity of the stress.
I encourage you to follow through with your Dr. re getting those blood tests done, my friend.
Gentle Hugs,
Kitt