Dizziness and blackness in front of the eyes when standing up may be caused by physiological factors, hypoglycemia and cervical spondylosis.
1. Physiological factors: If the patient squats for a long time, due to the sudden change of body position, the blood in the lower limbs is stagnant and cannot return to the heart immediately, causing cerebral vascular hypoperfusion, resulting in insufficient cerebral blood supply, which leads to the phenomenon of dizziness and blackness in front of the eyes as soon as one stops up.
2. Hypoglycemia: If the patient is in the state of low blood sugar, it will cause insufficient supply of brain energy, which will lead to the symptom of dizziness and blackness in front of the eyes as soon as one stops up and may be accompanied by drowsiness, blurred consciousness and other symptoms.
3. Cervical spondylosis: mainly due to cervical spine degeneration, injury and other reasons, resulting in cervical vertebral hyperplasia compression of blood vessels causing insufficient blood supply to the brain, when standing up and changing position, can lead to obvious compression, thus causing dizziness and blackness before the eyes when standing up.
When the patient has a long-term dizziness and blackness when standing up, it is recommended to go to the hospital in a timely manner, to clarify the cause of the disease and then carry out treatment.