When tinnitus with headache occurs in the left ear, it is generally considered to be caused by inflammation, but not excluding other diseases, such as brain lesions, vegetative nerve dysfunction and so on. 1. Inflammation-related: If tinnitus with headache occurs in the left ear, it is firstly considered to be caused by inflammation, such as otitis media, and it is recommended to actively cooperate with the doctor for examination and diagnosis and treatment. 2. Brain lesions: such as brain tumors, brain stem infarction, etc., may also appear in the left ear tinnitus with headache symptoms, need to improve the diagnosis of cranial imaging examination and timely treatment. 3. Vegetative nerve dysfunction: Various symptoms such as tinnitus, headache, insomnia, panic, etc. may occur in the case of vegetative nerve dysfunction, which may be relieved by the administration of medication to regulate the nerve function if the relevant examination is not abnormal. When tinnitus with headache occurs in the left ear, it is recommended to consult a doctor in time to clarify the cause of the disease and then target treatment.