Autonomic Neuropathy and Its Pathophysiology in Autoimmune Autonomic Neuropathies, Postural Orthostatic Tachycardia Syndrome and Ehlers Danlos Syndromes: Peripheral Autonomic Small Fiber Neuropathy or Central Autonomic Failure? Validation of the Malmö POTS Score and a Better Diagnosis of POTS in Patientes With Autnomic Failure (VaGeMAPS-3-step-Diag)

Inclusion of patients with autoimmune autonomic neuropathies/ pure autonomic failure, postural orthostatic tachycardia syndrome, small fiber neuropathies, Ehlers-Danlos syndromes, Mast cell activation syndrom, Chronic fatigue syndrome and PostCOVID syndrome in our Registry study with follow up visits. Comparison to healthy controls concerning selected examinations.

Planned examinations are laboratory tests, questionnaires on mental and physical health status and circulatory disorders, attention tests, tilt table testing, standing test, sweat function, investigation of small fiber function via quantitative sensory testing as well as the density of nerve fibers in the skin. Measurements are performed at baseline mostly in clinical routine and follow up visits are offered.