Scrotal whitening and dryness is an abnormal manifestation of the scrotal skin, which is caused by fungal infections, scrotal eczema and psoriasis. 1. Fungal infection: it is one of the common infections in the scrotum, which will cause localized itching and lead to the production of white adherents, which will cause corresponding changes. 2. scrotal eczema: and local moisture, repeated friction and foreign body stimulation has a correlation, the emergence of local metabolic inflammation, will lead to skin whitening, dry performance, will be accompanied by obvious itching. 3. psoriasis: belongs to an autoimmune disease, there will be local skin damage, and will not be accompanied by symptoms of white flakes, causing corresponding changes. Scrotal whitening and dryness may have other reasons, patients need to consult a doctor in time to check, early treatment.