Apart for fibromyalgia, the symptoms can be due to a mini stroke or transient ischemic attack, compression of spinal nerves, Vit B12 deficiency, vitamin D deficiency, anemia, vaso-vagal attack, anemia, lupus and other autoimmune disorders
, heavy metal poisoning, multiple sclerosis, hypothyroidism, diabetes and panic attack. It can also be a type of seizure. If there is a headache then it can be benign intracranial hypertension too. Please consult your doctor regarding this. Take care!