Afatinib, generic name is afatinib maleate tablets. Side effects include diarrhea, rash, and elevated blood pressure, etc. Depending on the degree of response, general therapy, drug therapy, etc. are chosen. Afatinib Maleate Tablets are indicated for locally advanced or metastatic non-small cell lung cancer with epidermal growth factor receptor gene-sensitive mutations, previously untreated with EGFR tyrosine kinase inhibitors; locally advanced or metastatic non-small cell lung cancer of squamous histologic type with disease progression during or after platinum-containing chemotherapy. 1. Diarrhea: for people with mild diarrhea, they can continue to take afatinib orally, and at the same time ensure a light diet, easy to digest; for people with severe diarrhea, first of all, they should stop taking afatinib, and then give antidiarrheal treatments, such as montelukast, safranin, and so on, as symptomatic. 2. Rash: For those with severe rash, it is recommended that erythromycin ointment be used topically as prescribed by the doctor to alleviate the rash and the itching associated with the rash. 3. Hypertension: for hypertension, it is recommended to follow the doctor’s advice to take drugs to reduce blood pressure to improve the symptoms. Therefore, afatinib medication should be used under the guidance of a professional doctor, for the side effects caused by the drug also need to follow the doctor’s instructions targeted treatment, do not unauthorized use of drugs.