How long to regrow?

I had an absolutely awful breakup 4 years ago and lost a ton of the hair in the front my head. It's kinda just been sitting there ever since. It was originally diagnosed as TE but was wondering if you guys might have some other inclinations or should go look for a second opinion.

I had an absolutely awful breakup 4 years ago and lost a ton of the hair in the front my head. It's kinda just been sitting there ever since. It was originally diagnosed as TE but was wondering if you guys might have some other inclinations or should go look for a second opinion.