What causes black spots on arms

Dark spots on the arm can be caused by nevus, seborrheic keratosis, flat warts, hyperpigmentation and so on, which can be treated with medication and surgery.
1. Pigmented nevus: it is a benign tumor lesion, which can show the performance of black spots on arms, generally no treatment is needed, when it affects the appearance and mental health or the tendency of malignant change is obvious, it is feasible to have laser or surgical treatment, and it needs to be evaluated by specialist doctors.
2. Seborrheic keratosis: degenerative changes of the skin in old age, which can occur in the arm and other parts of the body, manifested as flat papules in the form of black spots. If it affects the appearance of the skin or appears red, swollen and broken, and is accompanied by pain and itching, it can be treated with freezing, laser and scraping under the guidance of a doctor.
3. flat warts: due to the infection of human papilloma virus, the arm can appear black spot-like pimples, can also be accompanied by itching discomfort. You can use salicylic acid, retinoids, interferon gel and other treatments as prescribed by your doctor, and you can also undergo surgical treatments such as autologous wart immunotherapy.
4. pigmentation: due to endocrine, digestive system diseases, inflammation, drug stimulation, ultraviolet radiation and other factors, can lead to melanin on the arm, manifested in the arm of the long black spots. It can be treated with vitamin C externally as prescribed by doctor, and also can be treated with fractional laser.
When there are black spots on the arms, you should consult a doctor in time, and under the guidance of a specialized doctor, you can actively carry out appropriate treatment, which can help to alleviate the uncomfortable symptoms as soon as possible.