Does drug induced Telogen Effluvium cause miniaturized hairs?

If  there is a history of male pattern baldness in your family, Telogen effluvium  hairs can return in a miniaturized state. I would suggest you see a hair loss expert. We have good treatments for hair miniaturization.Jeff Rapaport MD FAADRealself Verified All-star

Hello and thank you for your question. There is a chance it could be permanent. Please see a hair loss expert for a consult. Best wishes.Dr. T

Hi and welcome to our forum!
Discontinuation (or dose reduction) of the Depakote will usually result in regrowth of hair within a year. 
Hair miniaturization is the result of one's genetics, a nutritional deficiency, adverse drug reaction, high levels of DHT, and aging.
It can be treated with minoxidil (which may reverse early miniaturization by increasing blood flow) or finesteride (which lowers DHT levels and can prevent miniaturization). 
If hair loss is significant, a hair transplant may be considered.
Visit a hair loss specialist in your area for in person evaluation and discussion.
Best wishes...

If you are saying that the hair, when it came back, was of a smaller caliber, then this may be a permanent effect.