Greetings Dominic1234, Appears to be male pattern hair loss. Nonetheless, I strongly recommend you should have a formal evaluation. Finasteride is generally the initial go to medication for most practitioners. However, it can occasionally have some form of sexual dysfunction side effects in a little more than 15% of male patients. Of which, in a subset, may persist. Therefore, I prefer to avoid Propecia/Finasteride until I've tried other methods to address the likely major culprit DHT. In my opinion, your're too young to be considering hair transplants. Doing so at your age would likely leave you chasing your hairline with more transplants in the future. Hair loss and prevention of it can be complex. The first course of action I recommend is to seek out a good Integrative Medicine physician (IMP) who also practices Bio-Identical Hormone Replacement Therapy (BHRT). IMP's that also practice BHRT will have a good knowledge of remedies that will work for you. Your IMP will check your hormones, other possible contributing factors and then likely initially try to push up your good hormones while pushing down your bad hormones absent actually using hormones to do so. The goal being, to at least stop hair loss. While the IMP is working on your hormones and possible other issues, I recommend trying PRP Hair Regeneration. Additional over the counter topicals are generally included in most protocols. Existing hair in the treatment area will become richer and fuller while hair you haven't seen in a couple years may largely regenerate. Hair you haven't seen for 3 to 5 years may regenerate, but to a widely variable degree. Hair loss greater than 5 years is like unrecoverable. This is a regenerative medicine procedure. Regenerating hair takes a degree of waiting for things to happen. Within 6 months or so you should realize meaningful positive results. Approximately 20% of patients don't receive a meaningful benefit of hair regeneration. However, nearly everyone does realize the stop of hair loss and benefits to existing hair is generally very good. After the initial course of treatments, you will require maintenance a treatment every 6 months to 1 year. Every individual is different and with BHRT therapy, the maintenance treatments can usually be stretched out further. Generally, much further because the bad hormones are managed. There are many protocols for PRP hair regeneration. Do your research in identifying a practitioner with a solid protocol. I have and many other physicians have answered questions on the subject herein RealSelf. I recommend familiarizing yourself and then seek out the physician with a solid protocol. Don't wait too long. As time quickly passes, so too does your opportunity to regenerate your hair. I wish you the best in locating a solution that works for you. Warmly, Arbella Sarkis, MD