Greetings,We advise to avoid sexual activity for first week after hair transplantation. The rationale is to avoid increasing blood pressure. There are no studies supporting this however. Best Anil Shah MD
Hair transplant surgery does not cause erectile dysfunction. Erection and hair on your scalp is not related. Not clear where you may have got the information.
A hair transplant does not cause any sexual side effect. Sometimes people take the drug finasteride and 2-4% of these people may experience ED