Folic acid

t gel by neutrogena or the off brand works great. doesn't smell awesome but it works

My dermatologist said psoriasis does not cause your hair to thin, but I've noticed mine is getting thinner. Try not to scratch, and use a steroid foam. I've started taking biotin and I take fish oil. Time will tell. I'll keep you posted. Take care. :)

Try a TAR shampoo

One of my dermatologists blew me off when I first mentioned PsA but my current one seems to have a wealth of info. I do know drugs AND weight loss can cause hair loss. And, no one knows exactly how any one persons body will deal with it all.