Sweat patches that is florid furuncle, the difference between it and vitiligo lies in the cause of the disease, lesion symptoms, onset of the site and so on. 1. The cause is different: sweat patches are caused by Malassezia infection, occurring in young adults, men are more common. Humidity, high temperature environment, oily skin or easy to sweat for the fungus provides a good living environment, is likely to induce sweat patches. Vitiligo is caused by the death of skin melanocytes or stop producing melanin, which can lead to pigment loss and may be related to immune abnormalities and genetic factors. 2. Symptoms are different: sweat patches of white spots may be fine chaffy scales, usually no self-conscious symptoms, occasionally itchy, often manifested in winter light summer. Vitiligo white spot surface smooth, border clearer, white spot in the hair can be normal or whitened. 3. the onset of different parts: sweat patches may appear in the face and neck, chest, shoulders and back, upper arms, armpits and other sebaceous gland-rich parts of the hair. Vitiligo can appear in any part of the body, but it is more likely to appear in exposed, friction and folded areas, such as the face, neck, hands and so on. When the above symptoms appear, it is recommended to consult a doctor in time, follow the doctor’s instructions to choose the appropriate examination, clarify the cause with the help of the doctor, and carry out targeted treatment or therapy.