Small white spots on arm skin may be caused by whitehead acne, pemphigus, anemic nevus, vitiligo, idiopathic punctate hypopigmented spots and so on.
1. Whiteheads acne: Because sebaceous glands secrete abundantly, they can’t be discharged in time and pile up on the surface of the skin, forming white pimples.
2. Pemphigus vulgaris: this is a rare hereditary skin disease, resulting in abnormal proliferation and differentiation of melanocytes, characterized by white spots on the central skin of the forehead and white hair on the forehead, and white spots can also appear on other parts of the body.
3. Anemic nevus: this is a congenital limited vascular developmental defect disease, mainly manifested in the formation of white skin lesions.
4. Vitiligo: due to melanocyte self-destruction, oxidative stress and other reasons, induced by vitiligo, manifested as arm skin with smooth surface pigmentation loss spots.
5. idiopathic punctate hypopigmentation spots: with age, the skin appears aging, ultraviolet irradiation caused by exposed parts of the multiple round or irregular pigmentation loss spots.
Small white spots on the skin of the arm, there may be other reasons, it is recommended to seek medical advice as soon as possible to identify the cause of the disease, and follow the doctor’s instructions for treatment.