Neuropathic POTS: What It Is, What Causes It and How It's Treated

One study divided 24 people with POTS into neuropathic and non-neuropathic groups. The neuropathic group had abnormal skin nerve fiber density plus abnormal small fiber and sweat-nerve function, and 9 of the 24 met that definition (Gibbons, 2013). A 2022 paper confirms that the subtype still has no formal diagnostic criteria (Zhang, 2022).

Because the definition rests on small fiber findings, neuropathic POTS overlaps heavily with small fiber neuropathy. Small fiber neuropathy names the nerve condition, and neuropathic POTS describes a person who has it and also meets POTS criteria on standing.

Our team sees the fast heart rate in POTS as a compensation, a rescue for brain blood flow. POTS is that compensation succeeding, and orthostatic hypotension is it failing. In the neuropathic subtype, the heart is answering blood that pools in the legs.

What Causes Neuropathic POTS?

A 2021 study of leg pain in this subtype describes it this way: peripheral sympathetic dysfunction leads to excessive venous blood pooling when upright (Rodriguez, 2021). The nerves that tell your leg blood vessels to tighten are partly lost, so more blood settles in the legs and less returns to the heart.

Lying Standing

Replay

Why the nerves are lost often goes unanswered. Across small fiber neuropathy as a whole, the cause remains unknown in up to 50% of cases (Terkelsen, 2017).

Immune involvement is one possibility. In 17 people with long COVID and neuropathy findings, the authors point to infection-triggered immune dysregulation as a common mechanism (Oaklander, 2022). In the POTS skin biopsy and sweat testing study, people with abnormal results trended toward more autoimmune disease, though no specific antibody tracked with the results (Zhang, 2022). Our team also sees many people who have dysautonomia and autoimmunity at the same time.

Our team looks past the skin finding to the rest of the standing response. Lost leg nerves are one reason blood pools, and in our team's view brain blood flow control, breathing and the heart rate response shape how well the body covers for it.

Neuropathic POTS Symptoms: What Changes When You Stand?

A 2021 study of this subtype notes that up to 84% of patients report leg pain and weakness when upright (Rodriguez, 2021). That fits the pooling picture, since the legs are where the blood settles.

Few other features set the subtype apart. A retrospective study of 382 people with POTS compared clinical and demographic variables, and only a higher baseline heart rate was significantly associated with the neuropathic subtype, with questionable clinical significance (Rilinger, 2026).

Sensory symptoms such as burning, numbness and tingling usually start in the feet and climb evenly on both sides, and less often show up in patches elsewhere on the body (Terkelsen, 2017).

How Is Neuropathic POTS Diagnosed?

The first step is confirming POTS on a stand or tilt test: a heart rate rise of 30 or more beats per minute within 10 minutes of standing, or 40 or more in teens, with symptoms and no drop in blood pressure (Vernino, 2021). Skin biopsy and quantitative sudomotor axon reflex testing (QSART) are the preferred ways to assess autonomic small fiber neuropathy (Zhang, 2022), and quantitative sensory testing is also used (Terkelsen, 2017). A European guideline rates a distal leg skin biopsy, read against age-matched norms, as a reliable way to diagnose small fiber neuropathy (Lauria, 2010).

In a cohort of 356 people with POTS, 19 of the 80 who had skin biopsies (24%) showed reduced nerve fiber density, and 70 of the 211 who had QSART (33%) showed reduced sweat output (Zhang, 2022). How each of those tests works is covered in our article on small fiber neuropathy and dysautonomia.

In our team's experience, many autonomic cases get diagnosed as neuropathic POTS because a test found small fiber neuropathy. A skin biopsy usually samples 1 spot, maybe 2, on 1 side of the body. The result describes the nerve fibers in that patch of skin, and it can't show by itself whether the nerves to your leg blood vessels are affected.

Body position matters for sensory testing, because our team sees results change between sitting and lying down. Sensory findings that look abnormal sitting up sometimes normalize once the person lies flat. A single test in a single position can make the label look more certain than it is.

Our team usually tests position by position and reads each finding against the rest of the exam before accepting the label.

Neuropathic vs Hyperadrenergic vs Hypovolemic POTS

The 3 subtypes differ in what stands out. In neuropathic POTS, nerves to the leg blood vessels are partly lost, so blood pools. In hyperadrenergic POTS, norepinephrine runs high on standing as the body pushes harder. In hypovolemic POTS, blood volume is low. In each, the heart speeds up to keep blood reaching the brain, and our overview of the 3 types of POTS puts them side by side.

A single person can show more than 1 pattern at once. Our team looks for the driver that leads in you and the ones along for the ride, because that order decides what to treat first.

How Is Neuropathic POTS Treated?

Medications prescribed by your doctor can help, and our team doesn't change them, because that's your prescriber's call. In our team's view, their ceiling is that they act on heart rate, blood volume or vessel tone. Our POTS treatment page covers the full approach. A 2026 retrospective study suggests people with neuropathic POTS may respond to medication differently from people with other forms of POTS, though prospective studies are needed to confirm it (Rilinger, 2026).

Immune-directed therapy has early, limited support. A case report describes a 35-year-old woman with immune-mediated neuropathic POTS whose symptoms and quality of life improved on subcutaneous immunoglobulin (Pitarokoili, 2021). In 17 people with long COVID and neuropathy, improvement averaged 52%, and none reported complete resolution (Oaklander, 2022). A single case and a small cohort don't establish a treatment, and none of the studies on this page tested one for neuropathic POTS in a controlled trial.

The clinic works on brain blood flow and on how the nervous system responds to standing, so the heart doesn't have to carry the rescue alone. The 3D tour shows how our team tests that response, and the free POTS Roadmap lays out the steps.

Neuropathic POTS: FAQ