Ear pain is not usually a precursor to a brain attack. Cerebral infarction does not usually cause ear pain. Ear pain may be caused by ear diseases, pharyngeal diseases, glossopharyngeal neuralgia and other reasons. 1. Cerebral infarction: the precursor of cerebral infarction may have numbness and weakness of the limbs, earache is usually not the precursor of cerebral infarction. After the occurrence of cerebral infarction, it leads to the damage of local cerebral nerves and brain tissues, inducing brain dysfunction, dizziness, headache and unfavorable speech, etc., which usually does not lead to ear pain. 2. Ear diseases: otitis media, otitis externa, otitis externa boils, etc., which may lead to ear pain and may be accompanied by pus in the ear, tinnitus and other symptoms. 3. Pharyngeal diseases: tonsillitis, peritonsillitis, etc., which may cause reflex ear pain and may also be accompanied by symptoms such as itching and pain in the eyes. 4. Hypopharyngeal neuralgia: when hypopharyngeal neuralgia attack, patients may appear ear pain symptoms, but also with the jaw, laryngopharyngeal, unilateral posterior part of the tongue and other parts of the pain, and the pain symptoms are more serious, like pins and needles, electric shock-like. It can be seen that ear pain is generally not a precursor of cerebral infarction. If the symptoms of ear pain can not be relieved, it is recommended to seek medical treatment as soon as possible.