Sexual function is a complex physiological process. The maintenance of normal sexual function depends on the collaboration of multiple systems of human body, involving the coordination of the nervous system, cardiovascular system, endocrine system and reproductive system, in addition to a good mental state and a healthy psychology. When the above system or mental and psychological aspects of abnormal changes, will affect the normal sexual life, affecting the quality of sexual life, manifesting sexual dysfunction. Sexual dysfunction sometimes is often not a single disease, many diseases may directly or indirectly cause sexual dysfunction. For example, some herniated disc lesions (such as lumbar disc prolapse) often cause damage to the efferent and afferent impulses via the central nervous system, resulting in pain and numbness due to nerve root compression, adhesions, and inflammation. This causes impotence in men or lack of orgasm in women. For example, certain disorders that hinder the blood supply to the pelvic cavity, which can directly affect the sexual function due to the disruption of the blood vessels of the sexual organs (which is important for the sexual response of both men and women). Many disorders can indirectly affect sexual function. For example, patients with chronic obstructive pulmonary edema may be so severely deprived of oxygen that they cannot tolerate the increased oxygen demand during sex; patients with rheumatoid arthritis may have difficulty having intercourse due to restricted position and movement; patients with obesity may also be unable to have intercourse due to mechanical barriers to sexual organ contact. Where there is fatigue, weakness of any disease, may affect the sexual excitement of men or women, as in fatigue when reluctant to participate in other forms of physical activity – the same. Any disease with pain, fever, general malaise, loss of appetite, skin rash, etc., may make the patient less interested in sexual life, or even hypogonadism. Psoriasis vulgaris is a common chronic and easily recurring inflammatory skin disease, which is currently considered to be related to the following factors: 1. genetic factors: related to genetic genes. 2, environmental factors: age, overweight and obesity, long-term over-eating, insufficient exercise, nutritional imbalance, smoking and alcohol consumption, viral infections, chemical toxic exposure and other factors. 3, immune factors: related to the decline or deficiency of autoimmunity; 4, mental factors: mental tension, emotional excitement and various stress states. Psoriasis vulgaris, generalized eczema, chronic urticaria, severe ichthyosis, etc. can lead to sexual dysfunction.