Vitiligo patients are generally short of copper, so trace element detection is one of the important means to find out the etiology and pathogenesis of vitiligo patients. If trace elements such as copper and ceruloplasmin in patients' serum are missing, the synthesis of melanin will be reduced or even reduced. And cause vitiligo.
2. Biopsy
Biopsy is a useful method to check vitiligo. If there is vitiligo, the density of melanocytes in vitiligo focus will decrease, and the surrounding melanocytes will increase abnormally. There are no melanocytes in the lesions in the late stage of vitiligo. The process of skin biopsy is to select a new and typical lesion from the patient, after local infiltration anesthesia, cut off a small piece of tissue with a surgical knife and send it to pathological examination.
3. Ultraviolet lamp
This method is a commonly used auxiliary detection method in clinic, with a wide range, and can be used as an auxiliary diagnosis and curative effect judgment for detecting abnormal pigment diseases, such as vitiligo. Judging whether the white spot on the patient's skin is vitiligo by the intensity of melanin absorbing full-band ultraviolet rays. Vitiligo patients can have wood lamp examination and dermoscopy when necessary.