'Immune jab' treatment blocks chronic pain

'Immune jab' treatment blocks chronic painA treatment already used for immune diseases like rheumatoid arthritis appears to also work for chronic pain, scientists have discovered.One small dose of intravenous immunoglobulin (IVIG) reduced pain in just under half of patients treated. The pain relief lasted five weeks, on average, with few or no side effects, Annals of Internal Medicine reports.