Black dots on the fingers may be pigmented nevus, melanoma, seborrheic keratosis, hyperpigmentation, and so on. 1. Pigmented nevus: It is a benign tumor originating from melanocytes, which may lead to black dots on fingers. 2. Melanoma: It is a malignant tumor originating from melanocytes, which can also cause black dots on the fingers, and needs to be treated with surgery or other measures as soon as possible. 3. Seborrheic keratosis: It is related to external sunlight exposure and chronic inflammation stimulation, which may cause black dots on fingers. 4. Hyperpigmentation: trauma, fungal infections, eczema and other inflammatory diseases after recovery, may cause localized hyperpigmentation, can also lead to black dots on the fingers. Black dots on the fingers, there may be other reasons, you need to go to the hospital in time to check, follow the doctor’s instructions for treatment.