Sweat duct tumors are a common condition that often appears near the eyes, such as under the eyes and other areas around the eyes. The specific reasons for the occurrence of sweat duct tumors on the face and eyes are unknown, with a familial dominant genetic tendency, part of which may be related to hyperthyroidism and diabetes. 1. Sweat duct tumors are small tumors originating from small sweat glands or parietal sweat glands, manifesting as multiple scattered, skin-colored papules with a diameter of 2 to 4 mm. They are most commonly found around the eyelids, but can occur anywhere on the skin. 2. Sweat duct tumors may have a familial dominant genetic predisposition. It is usually more common in women than in men and may occur during puberty, and the number of sweat duct tumors may gradually increase with age. 3. Some of these tumors may be associated with systemic diseases, such as hyperthyroidism and diabetes mellitus. If there are many sweat duct tumors on the face and eyes, it is recommended to consult a dermatologist for further diagnosis and treatment.