The causes of white patches on fingers are considered to be due to tinea cruris, vitiligo, post-inflammatory hypopigmentation and other factors, which can be relieved by general treatment, medication and other treatments. 1. ringworm: this is caused by dermatophytes infecting the skin of the hands, which can cause hyperkeratosis of the palms and fingers, manifesting as localized white patches, desquamation and dryness, accompanied by mild itching sensation, which can be treated with antifungal medications, such as miconazole, econazole and clotrimazole, to improve the symptoms of the patients. 2. Vitiligo: this is mainly due to the destruction of melanocytes and caused by the white spot disease, so the patient may appear white patches on the fingers, after diagnosis, can be treated by immunotherapy so as to slow down the development of the disease, you can follow the doctor’s instructions to take prednisone, tacrolimus and other drugs. 3. Post-inflammatory hypopigmentation: After localized inflammation of the skin, hypopigmentation is likely to occur under the stimulation of inflammation, most of which will be relieved over time, and if necessary, foundation cream and other covering methods can be chosen to improve the appearance. After the appearance of white patches on the fingers, it is recommended to go to the hospital in time, after clarifying the cause, and then do targeted treatment. The above medications should be used in accordance with medical advice.