Dysautonomia TiDBit "POTS patients may also suffer from mental clouding ("brain fog"), blurred vision, shortness of breath, early satiety, nausea, headache and chest discomfort; Other symptoms include anxiety, flushing, postprandial hypotension, lower back pain, aching neck and shoulders, cold hands (and often feet nose), and hypovolemia." Diagnosis and Management of Postural Orthostatic Tachycardia Syndrome: A Brief Review