Hello, i'm an 18-year-old male and i've had erection problems for 6 months now. I've been to ultrasound examinations etc that measure blood-flow and with an injected medicine I got an erection, and the doctors concluded that I have no erection problem.
However, the erection was only in the shaft, and this is the deal with all my erections. They are mostly only semi-hard, and blood won't stay in the head (spongiosum) part of the penis. I never have spontaneous hard erections that I notice, and my morning erections are also only semi-hard, and the head stays rather soft.
One might say "since the shaft works somewhat, what are you complaining?" well, when your supposedly erect penis feels like a thin stick because the head and the shaft's spongy part are soft and flat, it even makes masturbation more difficult.
What do you think this is? My hormonal levels (testo etc) are normal. So the main problem with my erections is that blood won't stay in the head... And overall weakened erection strength.