Fibromyalgia is another one. Predominantly diagnosed or reported in women, though I (a male) got it from my mother (if it is even hereditary, otherwise just bad

Fibromyalgia is another one. Predominantly diagnosed or reported in women, though I (a male) got it from my mother (if it is even hereditary, otherwise just bad luck). I wouldn't be surprised if many of these chronic symptoms boil down to nerve damage from either infections or the subsequent inflammation. My brother's got pretty bad long COVID symptoms, but there's nothing physically wrong that doctors can find despite running every test under the sun related to his lungs and heart. Again, best guess is some sort of nerve damage causing the symptoms.