The head is always dizzy, do not consider AIDS: first of all, AIDS generally damage to the nervous system, most of the symptoms can be manifested as an acute encephalopathy. For example, meningitis attacks or peripheral neuropathy. For the head always dizzy is generally considered to be due to poor sleep, resulting in the next day’s head drowsiness or patients with blood pressure abnormalities, low blood pressure or high blood pressure, affecting the blood supply to the brain, the patient can also appear dizziness. Secondly, dizziness can also be seen in patients with otolithiasis after manipulative repositioning, which is called the after-effects. Then, dizziness can also be seen in patients with anemia. Because hemoglobin can carry oxygen, when anemia, the hemoglobin content decreases, resulting in the lack of oxygen in the brain cells, the patient can also appear dizzy, so that the head is always dizzy is not necessarily AIDS, AIDS neurological damage is generally more serious.