ADHD symptoms in some children may be tied to rare tumors, study finds

NIH researchers found that 21% of children with rare pheochromocytoma and paraganglioma tumors in their adrenal glands had attention-deficit/hyperactivity disorder before tumor identification, compared with a general population rate of 7.2%. The findings in Hormone and Metabolic Research, based on 2006 to 2014 data involving 43 pediatric patients, showed one-third of the children with ADHD who had their tumors removed no longer displayed ADHD symptoms after surgery.  LiveScience.com (5/17)  http://www.livescience.com/54767-adhd-rare-tumors.html