What causes a drowsy, dizzy feeling as if lacking oxygen, and what should I do about it?

A feeling of dizziness and mental fogginess, similar to oxygen deprivation, may be caused by conditions such as iron-deficiency anemia, hypertension, or insufficient cerebral blood supply. Treatment should be based on the specific cause. The details are as follows:

1. Iron-Deficiency Anemia

Various factors can lead to decreased iron levels in the body, significantly reducing hemoglobin and oxygen content in the blood, thereby impairing oxygen delivery to the brain and causing symptoms such as headache and a sensation of head fullness. Under medical guidance, patients may take medications such as protein succinate iron oral solution or ferrous succinate tablets.

2. Hypertension

This condition refers to abnormally elevated arterial blood pressure exceeding the upper limit of the normal range. Chronic hypertension can lead to inadequate perfusion of vital organs such as the brain and heart, resulting in symptoms like headaches and dizziness. Medications such as furosemide tablets or hydrochlorothiazide tablets may be prescribed under a doctor's supervision.

3. Insufficient Cerebral Blood Supply

This condition is primarily caused by cerebral atherosclerosis, which impairs blood flow to the brain and leads to ischemia and hypoxia of brain cells. Symptoms include dizziness and impaired consciousness. Under medical guidance, medications such as betahistine hydrochloride tablets or clopidogrel hydrogen sulfate tablets may be used for treatment.

In addition to the above causes, similar symptoms may also result from conditions such as neurosis, sleep apnea syndrome, or cerebral infarction. It is important to frequently open windows for ventilation to maintain indoor air circulation. Adequate rest should be taken, and excessive mental exertion should be avoided.