Long spots on men’s face may be caused by chloasma, seborrheic keratosis, freckles and other conditions. 1. Melasma: this disease is a common clinical subtype of skin melanosis, the specific etiology of which is still unclear, clinically considered to be related to genetic factors, long-term ultraviolet irradiation and other factors, at the same time, some patients with liver disease will also have this disease. Patients with this disease often have zygomatic prominence, forehead and other facial yellow-brown plaques, and can be aggravated when the patient stays up late at night, fatigue and so on. 2. Seborrheic keratosis: this disease is also known as age spots in life, which is a kind of common epidermal benign tumor. The specific cause of this disease is still unclear, and clinical consideration is related to aging of patients’ skin, gene mutation and genetic factors, which often leads to the appearance of light brown to black plaques on the neck, head, face and other parts of patients. 3. Freckles: This disease is a kind of hyperpigmentation spot that develops on the face, which is more common in females, but there are more male patients as well. The main cause of this disease is genetic factors, and at the same time, the clinic believes that this disease is related to the patients’ facial skin being exposed to ultraviolet rays for a long time, and the patients often have light brown to dark brown plaques with the size of a needle tip to a grain of rice on the face. Clinically, there are many reasons that can lead to spotting on men’s faces, and it is recommended that patients first seek medical examination to clarify the specific causes of the disease.