Stellate ganglion block (SGB) for increasing HRV? (also reducing sympathetic to parasympathetic load/PTSD/depression/etc)

helps reduce sympathetic to parasympathetic ratio

And treating cPTSD obvs

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Have you tried this?

adic

@adic_9

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6h

Replying to @seanstidston

Iirc stellate ganglion block and LDA made the biggest difference + pacing like crazy

Thought for 6s

  • @adic_9

replies to a question about Physics Girl (Dianna Cowern) improving enough to fly after being bedridden with ME/CFS from long COVID, citing stellate ganglion block, LDA, and strict pacing as the main factors.

  • Stellate ganglion block is a procedure injecting anesthetic near neck nerves to disrupt sympathetic overactivity, used experimentally for autonomic dysfunction and fatigue in long COVID cases.
  • LDA refers to low-dose aripiprazole (Abilify), an off-label antipsychotic that some ME/CFS patients report reduces fatigue and brain fog via dopamine effects, though results vary and lack large-scale clinical trials.

The main downside: SGB is a precision procedure

A stellate ganglion block is near the carotid artery, vertebral artery, recurrent laryngeal nerve, esophagus/trachea area, and sympathetic chain. Serious complications are rare, but a systematic review of reported SGB complications found both medication/systemic and local/procedure-related complications, including very rare catastrophic events.

That does not mean “don’t do it.” It means: you want the doctor using image guidance, monitoring, resuscitation capability, and not treating your neck like a dartboard at a county fair.

Sedation can slightly reduce your ability to give real-time feedback. Not always a dealbreaker, but with a neck block, I’d prefer awake enough to communicate.

SGB also changes heart-rate variability markers in ways consistent with sympathetic inhibition. One 2026 study found ultrasound-guided SGB changed HRV in a pattern suggesting selective sympathetic inhibition of the heart without affecting vagal tone, while another older study found left-sided SGB increased parasympathetic-related HRV measures in head/neck pain patients.