Dizziness lying down without dizziness may be caused by postural hypotension, cervical spondylosis, otolithiasis, anemia, low cranial pressure syndrome and other diseases.
1. Postural hypotension: when people stand up, gravity can lead to a decrease in the volume of return blood, cardiac output and blood pressure, resulting in dizziness, nausea, blackness and other phenomena, lying down, the increase in the volume of return blood, the brain blood flow is sufficient, the symptoms can be relieved.
2. Cervical spondylosis: when cervical disc herniation and intervertebral foraminal stenosis occur, blood vessels and nerves in the spinal canal are compressed, resulting in insufficient blood supply to the brain and dizziness, and when you lie down, a pillow will support your head and neck to improve intervertebral foraminal stenosis, which will lead to improvement of dizziness.
3. Otolithiasis: When the head moves or changes its position, it is easy to cause the otolith to fall off, thus dizziness occurs. After lying down, the otolith stops moving, and then the symptoms can be gradually relieved.
4. Anemia: when anemia causes insufficient blood supply to the brain, dizziness occurs when standing upright and is relieved when lying down due to the effect of gravity and the blood flows back to the brain.
5. Low Cranial Pressure Syndrome: Low intracranial pressure causes dizziness. When lying down, the cerebrospinal fluid flows back into the ventricular system, thus relieving the symptoms.
In addition, there are other reasons that can cause dizziness lying down without dizziness, it is recommended to go to the hospital in a timely manner to identify the cause of the disease, and then take targeted treatment as soon as possible.