Hello, An erection problem is the inability to get or maintain an erection that is firm enough for a man to have intercourse. If the condition persists, the medical term is erectile dysfunction. Causes may be psychological ( in most young men), smoking, alcohol, illicit drugs and medical conditions like diabetes, high blood pressure, heart or thyroid conditions, poor circulation, low testosterone, depression, spinal cord and neurological causes. To exactly pinpoint a diagnosis you need to get a complete examination done from a urologist. In your case it looks more psychological. Sildenafil is the drug of choice for erectile dysfunction. However it is available only on a doctor s prescription who will also assess the type and cause of erectile dysfunction before prescribing any drug. Hope it helps you. Regards.