Sudden Hairloss.

Hair loss and thinning hair is one of those things that often happens during UC flares whether we are on medications or not. It appears to be a delayed-reaction to the flare, delayed by about 2-months. We can loose hair due to one or more of the following: malnutrition as we barely eat and digest food poorly during flares, due to low blood-iron (an anemia), low vitamins D, B12, and B.

Hair-regrowth is a delayed-reaction to recovery from your UC flare, about 2-month delay.

Medications can rarely cause it, more often than not it is for one of the aforementioned reasons. If every UC medication lists hair loss as a rare side effect, despite them all having entirely different mechanisms of action, different active ingredients, and different inactive ingredients it makes me think the UC is the cause.

Took a look at the picture and I've definitely seen a lot worse during flares, I am not sure what the before photo would be like though.

I would not recommend switching TNFs, unless Simponi just isn't working at all.

Yes, assuming the underlying problems are resolved then your hair should regrow within a few months. If the flare is over, you are no longer anemic, etc, etc. We're more predisposed to be anemic and low in the aforementioned vitamins than the average population. Not guaranteed by any means, but something that'd show up in your blood work, if tested.

Mine has been falling out since July, but I also see regrowth, so it's in a weird place. I have a crap ton of hair, though, so I am not surprised that some is still falling out and some is starting to regrow. MD said the same as everyone above -- delayed reaction. I am constantly pulling hair out of the shower and sink drains and constantly vacuuming. It is so odd.