What causes dizziness, heaviness in the head, and mental fogginess?

Possible causes of dizziness, heaviness in the head, and mental fogginess include the following: 1. Sleep deprivation: Chronic lack of sleep or poor sleep quality can impair normal brain function and lead to nervous system dysfunction, resulting in symptoms such as dizziness, head heaviness, and mental fogginess. 2. Abnormal blood pressure: Both low and high blood pressure can affect cerebral blood supply, causing dizziness and head heaviness. Low blood pressure may reduce blood flow to the brain, while high blood pressure may increase intracranial pressure. 3. Cervical spondylosis: Problems with the cervical spine may compress blood vessels or nerves, impairing cerebral blood flow and neural conduction, leading to sensations of dizziness, head heaviness, and mental fogginess. 4. Mental stress: Prolonged psychological stress may cause abnormal secretion of brain neurotransmitters, thereby triggering symptoms such as dizziness, head heaviness, and mental fogginess.