Modern medicine holds that psoriasis is a chronic skin disease caused by multiple factors such as genetic and environmental factors. Similar to lupus erythematosus mentioned earlier in some aspects, it involves immune - mediated factors, which play a crucial role in the occurrence and development of psoriasis.
Approximately 8% of the DNA in the human body is derived from the remnants of retroviruses that infected ancient human ancestors. These retroviruses reverse-transcribed their own RNA into DNA, which integrated into the human genetic material and has been inherited by humans to the present day.
Lupus erythematosus is a chronic and relapsing autoimmune disease, commonly affecting women aged 20–40 years. Based on the site of pathological involvement, it is classified into cutaneous lupus erythematosus (CLE), which is confined to the skin, and systemic lupus erythematosus (SLE), which affects multiple organs throughout the body.
红斑狼疮是一种慢性且易反复发作的自身免疫性疾病，常见于20~40岁女性。根据病变部位进行分类，分别为局限在皮肤的皮肤型红斑狼疮（CLE）和累及全身脏器的系统性红斑狼疮（SLE）。
人类体内大约具有8%的DNA来自于远古时代的人类先祖所感染的逆转录病毒残余。这种逆转录病毒将自身的RNA逆转录为DNA并整合到遗传物质中一直跟随我们至今。