Anemia  and thyroid Tingling sensation and tremors in arms and legs, rapid heart rate,  shortness of breath,  dizziness,  Unstability, neck and back pain,  frequent upset stomach,  symptoms get worst  with upset stomach, jerks in whole body, inflammation in brain with slight stress or anxiety. Difficulty in seeing in low light and puffy eyes, unable bears even slight of sounds, red boils on skin. Since 4 months