Reasons for long spots on boys 'faces

Chloasma, also known as liver spot, is a common pigmented skin disease that occurs on the face. It can occur in both men and women, because women are more. There are many reasons, such as oral contraceptives for lesbians, and chloasma of pregnancy, etc., can be caused. But male patients may be caused by consumptive diseases such as hyperthyroidism, tuberculosis, cancer, chronic alcoholism or liver disease. There are also some long-term application of certain drugs, such as hibernation spirit, phenytoin sodium and other drugs can also induce this disease. Some people work tired, hard, over-stressed mood, but also caused. Face often manifested as tan or dark brown patches, often symmetrically distributed in the face and cheeks, and butterfly type. Can also involve the forehead, nose, mouth or chin.