10 Dysautonomia Symptoms
Reviewed: Dr. Mera
Symptom #8: Fainting
Although this is a nonspecific symptom that is also common with many other disease conditions, fainting can be one of the manifestations of dysautonomia. In the case of dysautonomia, fainting occurs when there is inadequate blood supply to the brain. It can be preceded by lightheadedness and confusion.
For instance, in patients that suffer from POTS or NCS, a change in position from sitting or lying down to standing up can trigger this symptom. The change in posture requires a normal response from the ANS to make sure that the blood supply to the brain is maintained. In dysautonomias, the heart rate and vascular tone have trouble coordinating to keep a stable blood pressure that ensures the brain’s blood supply.
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