Research on how adrenergic & muscarinic receptor antibodies cause symptoms in POTS, OH and CFS

Research on POTS, OH and CFS shows that many have elevated adrenergic or cholinergic (muscarinic or nicotinic) receptor antibodies. This thread is to discuss research on:

• How do these antibodies relate to POTS subtypes and pathomechanisms?
• Equally, how do these contribute to symptoms OH and CFS?

This is a research-oriented thread. There are separate threads for:

• ...

Research on how adrenergic & muscarinic receptor antibodies cause symptoms in POTS, OH and CFS