Symptoms of EHS stem from exposure to technology in the form of cell phones, laptops, PCs, wireless routers, and cordless phones, with the list extending to include everyday household appliances and even fluorescent lighting.
These symptoms are wide-ranging and differ for each individual, the more common complaints are: insomnia, fatigue, depression, chronic headaches, irritability, cognitive problems, chronic infections, joint pain, and numbness or tingling in the extremities .... http://www.naturalnews.com