Dizziness, nausea, and vomiting when standing up from a squatting position—what could be the cause?
Generally, dizziness, nausea, and vomiting upon standing up from a squatting position may be caused by normal physiological responses, hypoxia, hypoglycemia, anemia, cervical spondylosis, or other factors. Symptomatic management may involve general treatment, medication, and other approaches. If symptoms persist, it is recommended to seek timely medical consultation for appropriate treatment under a physician's guidance. A detailed explanation is as follows:

1. Normal Physiological Response
During the transition from a squatting to standing position, blood needs to be rapidly redistributed to the brain. However, in some individuals, the cardiovascular system may respond slightly slower, leading to temporary cerebral hypoperfusion, which may be accompanied by symptoms such as blurred vision and tinnitus. It is recommended to change body positions slowly and avoid standing up quickly from a squatting position.
2. Hypoxia
When squatting, respiratory efficiency may decrease, resulting in reduced oxygen supply. Upon standing, the body's oxygen demand increases, potentially causing transient hypoxia, which may lead to symptoms such as dizziness and nausea, along with rapid breathing and palpitations. Practicing deep breathing regularly can help improve pulmonary efficiency and increase oxygen supply.
3. Hypoglycemia
Hypoglycemia is primarily caused by inadequate food intake or excessive glucose-lowering therapy. Patients with hypoglycemia may experience dizziness and nausea during postural changes due to insufficient energy supply from low blood glucose levels. Additional symptoms may include palpitations, excessive sweating, and fatigue. It is recommended to use medications such as glucose sodium chloride injection, hydrocortisone tablets, and mannitol injection as directed by a physician to alleviate symptoms.
4. Anemia
Anemia may result from malnutrition, excessive blood loss, or impaired hematopoietic function. Patients with anemia have reduced hemoglobin levels, leading to decreased oxygen-carrying capacity and cerebral hypoxia, which may cause dizziness and nausea during postural changes. Additional symptoms may include fatigue, pallor, and palpitations. It is recommended to follow medical advice and use medications such as ferrous sulfate sustained-release tablets, ferrous fumarate tablets, and ammonium ferric citrate-vitamin B1 syrup II for treatment.
5. Cervical Spondylosis
Chronic strain and degeneration of the cervical spine may lead to cervical spondylosis. Vascular and nerve compression caused by cervical lesions may result in cerebral hypoperfusion, leading to dizziness and nausea during postural changes. Additional symptoms may include neck and shoulder pain, numbness in the upper limbs, and restricted movement. It is recommended to use medications such as chlorzoxazone tablets, eperisone hydrochloride tablets, and sodium naproxen tablets as directed by a physician to relieve symptoms.
It is recommended to maintain a balanced diet and appropriately increase intake of foods rich in iron and vitamins, such as animal liver and spinach, to help reduce the occurrence of discomfort symptoms.