Hello,
Cold sensation in the back and the shoulder is due to infections, nerve impingements, spinal injuries, vascular malformations,
fibromyalgia, etc. Muscle spasm in the back commonly accompanies pinched nerves and can be quite painful. Pinched nerve may cause symptoms like numbness and weakness in the arm or leg without pain. Symptoms also include hot / cold sensation, tingling and burning, it is called
paresthesia.
Lack of vitamin B12 and
iron deficiency can cause anemia and lead you to feel cold. Anxiety and panic attacks can have similar symptoms. She should take vitamin B6, B12, vitamin E rich food or supplements. Get her a complete medical check up done under a GP to detect anemia,
hypothyroidism,
hypothermia, bacterial or viral infection, etc. She will be treated accordingly.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Nupur K., General & Family Physician