Vestibular disorders and cerebral ischemia can both cause dizziness, loss of balance, and nausea, but they have different underlying mechanisms.

Vestibular disorders occur when the vestibular system in the inner ear and associated nerve pathways responsible for balance function abnormally. These conditions include various types, such as benign paroxysmal positional vertigo, vestibular neuritis, and Meniere's disease. Patients may experience spinning sensations, unsteadiness, loss of balance, nausea, or vomiting. If related to the inner ear, symptoms can also include tinnitus and hearing loss.

Cerebral ischemia, commonly referred to as brain anemia, is a condition where the blood supply to a specific brain region is reduced or interrupted. Causes can include narrowed or blocked blood vessels or blood clots. Symptoms depend on the affected brain area and may include weakness or numbness on one side of the body, difficulty speaking, visual disturbances, loss of coordination, dizziness, or loss of balance. Sudden onset of these symptoms can occur during a transient ischemic attack or a stroke.

A doctor advises a patient on how to reduce headaches and dizziness. *Photo provided by the hospital*.

These two conditions are often confused because both can cause dizziness and loss of balance. However, patients with vestibular disorders, especially benign paroxysmal positional vertigo, typically experience dizziness when changing head positions, such as rolling over in bed, sitting up, turning the head, or bending/tilting the head. These patients often feel a spinning sensation; the episodes are brief and can recur when the movement is repeated.

Dizziness indicative of cerebral ischemia usually has a sudden onset and is accompanied by difficulty speaking, double vision, facial drooping, weakness or numbness on one side of the body, loss of coordination, or a sudden inability to stand.

You can narrow down the potential causes based on two key distinctions: whether the episodes are clearly related to changes in posture and whether they are accompanied by neurological signs. Brief, recurrent spinning sensations when changing positions, without accompanying neurological abnormalities, may suggest a vestibular disorder. In contrast, dizziness with a sudden onset, along with speech, vision, sensation, motor, or coordination disturbances, requires assessment to rule out a brain-related cause.

If you frequently experience dizziness, it is advisable to manage your work and rest time appropriately and maintain a balanced diet, which also supports nerve health and cerebral circulation. You may regularly supplement with blueberry extract and ginkgo biloba. These nutrients can neutralize free radicals, help stabilize nervous system activity, and reduce headaches and sleep disturbances. If symptoms do not improve, you should consult a doctor for examination, diagnosis, and proper treatment.

Doctor Hoang Quyet Tien

Medical Information Center

Tam Anh General Hospital, TP HCM