The problem is called erectile dysfunction (not caused by masturbation)
because this is the first symptom of a complex disease.
You were born with several abnormalities that doctors are hidding
from you (abnormal arterial growth and possible congenital heart
defects) and that are triggering systemic (vascular but not only) changes
in your body.
You have 15-17 years of normal life since you start noticing that
masturbation doesn't give you a full erection. In order to slow down
as much as possible your impotence progression you need to take
viagra or cialis every few days.
Your health situation very severe even if you don't feel anything else
than problems with the erections. It is also quite rare.