Brown spots on the belly is the most common clinical symptoms of lichen planus, but also may be the symptoms of seborrheic keratosis, according to the cause of the use of drugs such as itraconazole, or the use of lasers and other treatments, the need for specific analysis. 1. lichen planus: this is caused by fungal infection, often occurring in the summer, patients need to use antifungal ointment coating treatment, such as terbinafine ointment, bifonazole cream, etc., if the patient’s lesion area is large can be orally antifungal drugs such as itraconazole, fluconazole, etc., there is a possibility of skin irritation or gastrointestinal tract reaction and other side effects, gastrointestinal tract disorders are prohibited in patients. 2. Seborrheic keratosis: the cause of this disease is related to genetic and skin aging factors. Usually there are no conscious symptoms, the treatment of seborrheic keratosis can use Q laser, strong pulse laser, liquid nitrogen freezing, CO2 laser and other methods of treatment. If the symptoms of brown spots are not relieved or accompanied by other undesirable symptoms, you should go to the hospital in time to consult the doctor, and after clarifying the cause of the disease, you can get symptomatic treatment.