The treatment for left arm numbness depends on the cause of the numbness, according to MedlinePlus. A doctor should identify the cause of the condition before recommending the necessary treatment. For example, patients suffering from diabetes need to control their blood sugar levels.
Some possible causes of numbness in the left arm include multiple sclerosis, Lyme disease, HIV/AIDS, vitamin B-12 deficiency and syphilis, states Mayo Clinic. Others include Raynaud's disease, alcohol disorder, carpal tunnel syndrome and Type 2 diabetes. The doctor will need detailed information about the symptoms to diagnose the condition. Patients may need to undergo several tests during the diagnosis before the doctor recommends the appropriate treatment. Fortunately, numbness is rarely linked to life-threatening conditions such as tumor and stroke, says Mayo Clinic.
Taking vitamin supplements helps in cases caused by low levels of vitamins, notes MedlinePlus. Doctors recommend changing or switching medications for numbness caused by certain medications. Changing or stopping medications is only necessary after a doctor recommends it. Quitting alcohol helps to relieve numbness caused by alcohol use disorder. It is imperative to consult a doctor if the numbness has no obvious cause, states MedlinePlus. Because numbness can reduce feeling in an area, it is advisable to be careful with the arm.