Impotence, clinically known as erectile dysfunction, or ED for short, is the persistent inability of the penis to achieve or maintain an erection sufficient to complete a satisfactory sexual life, and the duration of the disease is more than 3 months. When it’s time to get hard and not get hard, it really makes it impossible to get hard even if you want to justify it! What is impotence all about? Impotence can be divided into psychological ED, pathological ED and mixed ED according to the cause. 1, psychological ED: persistent, repeated inability to achieve or maintain adequate penile erection until the completion of sexual activity, mainly or completely caused by psychological or interpersonal factors. 2, pathological ED: caused by organic diseases, including endocrine diseases, neurological diseases, vascular diseases, systemic diseases, etc. In addition, long-term drug use can also 3, mixed ED: that is, the causes of ED both pathological, but also psychological. Its central rational ED onset is relatively sudden, there are obvious psychological factors induced, can maintain a normal erection at night and in the morning, no trauma, surgery, chronic disease or long-term drug history. Even make your family relationship frequently into tension. In addition, ED is also an early warning sign of many physical diseases. So, no matter what, once ED occurs, it is important to seek medical treatment in a timely manner.