Chronic or persistent pain is pain that lasts beyond the normal healing period. The development of persistent pain is influenced by genetic and environmental factors. Medscape Neurology & Neurosurgery
An investigational oral migraine medication is effective in the treatment of acute moderate to severe attacks and associated symptoms, without the direct vasoconstrictive effects typically associated with triptans. Medscape Medical News
A large, prospective cohort study shows that infants with a birth weight of more than 4.54 kg had an increased risk for the development of rheumatoid arthritis as an adult. Medscape Medical News
Having 3 or more subtle neurological abnormalities doubled the risk of dying within 8 years, in a study of community-dwelling, healthy older individuals. Medscape Medical News
German researchers have identified a gene implicated in sarcoidosis that has been previously linked to other chronic inflammatory diseases, including Sjogren syndrome, systemic lupus erythematosus, and rheumatoid arthritis. Medscape Medical News
