Dizziness all day long may be caused by high blood pressure, vertigo, insufficient blood supply to the brain, etc., which requires symptomatic medication according to the condition. 1. Hypertension: Heredity, heavy alcohol consumption and other factors may lead to increased arterial pressure in the circulation, thus triggering high blood pressure, with clinical symptoms such as headache, dizziness, etc., which may be manifested as dizziness all day long. Oral medication such as nifedipine and hydrochlorothiazide can usually relieve the symptoms under the guidance of a doctor. 2. Vertigo: Ear infections, excessive pressure and other factors may lead to subjective sensory impairment, thus triggering vertigo, clinical symptoms of dizziness, nausea, ear swelling, etc., and therefore may also lead to dizziness throughout the day. Oral betahistine, flunarizine, etc. are usually taken under the guidance of a doctor. 3. Insufficient blood supply to the brain: lack of exercise, obesity and other factors may lead to a decrease in the blood supply to the brain, thus triggering insufficient blood supply to the brain, clinical symptoms of dizziness, headache, tinnitus, etc., dizziness throughout the day may also be caused by insufficient blood supply to the brain. Oral aspirin, clopidogrel bisulfate tablets, nimodipine tablets, etc. are usually taken under the guidance of a doctor. When there is an overall feeling of dizziness, it is recommended to go to the hospital in time, under the guidance of the doctor to use medication, not blindly self-medication.