Secondary disease is the occurrence of this disease that is caused by one or more diseases, called secondary disease. A secondary disease is the opposite of a primary one. A secondary disease is one that has a clearer cause and is caused by an exact disease, so it is called a secondary disease of some kind. For example, a diagnosis of a brain tumor can be secondary to epilepsy, and the clinical term for epilepsy is secondary epilepsy. The treatment is to treat the primary cause of the disease, but also to treat the symptoms, treating secondary hypertension, epilepsy and so on. If the cause of the disease is clear, the first step is to treat the cause of the disease. For epilepsy caused by cerebral infarction or cerebral hemorrhage, the first step is to treat the cerebral infarction or cerebral hemorrhage, and if there are tumors in the skull, the tumors will need to be removed using surgical methods. If the epilepsy is caused by bacterial or parasitic infections, it should be treated with sensitive antimicrobials (e.g., ceftriaxone) and antiparasitic drugs (e.g., dihydroartemisinin). It is important to follow the doctor’s instructions on the use of medications and not to use them blindly, as this may cause adverse effects.