Low Testosterone,erectile Dysfunction,fatigue,sleep Disturbance,small Genitals
Thanks for posting your query.
I can understand that you are a 21 year old male with a history of delayed puberty. Your concern now seems to be related to low facial hair, decreased sexual drive and small penis.
All your complains seems to be related to probable hypogonadism. The problem can be either in your testis or in your brain(Pituitary gland). it can still rarely be constituinal delay in puberty, that resolves by itself.
You will require an complete clinical examination to asssess your size of testis and other secocondary sexual characters. you may also require a complete hormonal evaluation including testosterone, LH, FSH, and prolactin. These examination and tests will help to confirm and localise the problem if any.
Then we can plan for appropiate treatment. These are definitly treatable conditions, do not be worried.
Hope this answers your query. Wishing you good health
regards