You will learn why when you get to the section about neurotransmitters. This is an emerging field, and the majority of health care practitioners out there know little about them, and yet they run, and can ruin, our lives. Your thermal regulatory system may be out of whack. You may have to wait for your temperature to cool down after getting back in bed, before you can pull the bed covers up again. Your hormones become unbalanced.
Fingernails can break off, often in crescent-shaped pieces.
If nails do grow, they sometimes start to curve under. Your cuticles may overgrow, and yet they develop hangnails which take a long time to heal. You get bruises, but you can't remember where you got them, and they take forever to heal. FMS is a sensitivity-amplification syndrome. This means that you can be are hypersensitive to smells, sounds, lights, and vibrations.