I saw a new dermatologist who wants to do a biopsy to find out the cause of my hair loss. He isn't sure if it's androgenetic alopecia or diffuse alopecia areata. It won't cost me anything because it's on the NHS, but it seems like a lot of pain and distress for something that might not actually benefit me. My hair loss is really general all over my head so it's difficult to say where would be good spots for them to take the holepunch from. There are literally zero unaffected, normal areas. Having said that, I'm pretty sure my hair loss is Androgenetic Alopecia - it started very suddenly at 20 and doesn't have the typical Androgenetic Alopecia pattern, BUT my mother has Androgenetic Alopecia so it makes sense I would have inherited it. I have terrible receding temples and my hairline is thinning badly as well as receding. If it is Androgenetic Alopecia, there's not really much that can be done about it (already on spironolactone and I won't use rogaine) so there doesn't seem much point. What are the chances of it being diffuse alopecia areata? If it is, what can actually be done about it treatment-wise? Are there any real benefits to having a biopsy done? Am I being needlessly cynical?