@goldleaf I understand your condition. I was diagnosed with this in 2014 after decades of hypersensitivities, migraines, chronic anxiety, chronic pain syndromes (fibromyalgia, pudendal neuralgia, occipital neuralgia and now "idiopathic" small fiber peripheral polyneuropathy). Im 72 now, have had these issues to some degree since an extremely stressful, abusive childhood.

I didn't understand that diagnosis given by a migraine specialist and no details were given. However, this vague explanation was to be the only educated info I received through the years. No other doctors seem to know what it is at all, greatly preferring to assume I'm just a hypochondriac and need intense mental therapy.
Note that I am also autistic which is a risk factor for this since I am naturally more sensitive.

Understanding that this condition is a documented syndrome has lessened the anxiety a tiny bit, which I appreciate because anxiety worsens the deep burning, itching pain and increases migraines. GI symptoms, heart pounding, urinary urgency, chest tightness.

I may not be able to completely cure the SFN but I can improve this overall hypersensitization by lessening the anxiety level which hypersensitized my brain. I'm learning that is possible. Dont give up.