1. Psychological erectile dysfunction
It is also characterized by erectile dysfunction. However, patients often have a history of mental trauma, homosexuality, marital disharmony or mental anxiety and depression, and can have a normal erection under certain circumstances, such as masturbation, sleep or being with another partner. It is normal for penis to erect at night. Penile blood flow test is normal.
2. Nervous erectile dysfunction
It refers to erectile dysfunction caused by the destruction of the structural and functional integrity of pudendal nerve pathway. When peripheral nerve is injured, physical examination can find that anal finger reflex and cavernous muscle reflex are weakened or disappeared, and reflex penis erection is weakened or disappeared. Neuroelectrophysiological examination can also make a differential diagnosis.
3. Arterial erectile dysfunction
It refers to erectile dysfunction caused by pathological changes or abnormalities of penile arteries. The diameter, systolic maximum velocity and blood flow acceleration of cavernous artery can be known by drug-induced duplex ultrasound (PPDU).
4. Venous erectile dysfunction
It refers to erectile dysfunction caused by pathological changes or abnormalities in penile veins. The presence or absence of venous fistula can be known by cavernous manometry and cavernous angiography.
5. Thyroid diseases
There is an obvious relationship between thyroid diseases and impotence, and impotence in thyroid patients is also very common. However, there are few cases of seeing a doctor because of impotence in clinic. The reasons are as follows: first, other symptoms are serious, which covers up the influence caused by impotence, and patients have no intention of taking into account sexual function. Secondly, due to the influence of traditional ideas, it is difficult for patients to talk about this situation for fear of being laughed at. The third is the patient's self-restraint, thinking that peace talks should not be considered and talk about this matter. Fourth, physicians or surgeons are not aware of this situation at all and think that special care and treatment are not needed. In fact, the doctor's consideration and guidance in this respect will produce an effect that is conducive to the recovery of the disease. Diagnosis of thyroid diseases is based on symptoms and determination of T3 and T4 levels in blood (T3 is triiodothyronine in blood and T4 is thyroxine in blood). The content level of these two hormones basically reflects the function of thyroid gland and is a necessary examination.