By Katherine Sanger
Autism is a spectrum disorder, meaning that there is a range of symptoms, and the severity of those symptoms varies. The most common diagnoses are Pervasive Development Disorder (PDD), Autism and Asperger's Syndrome. Each diagnosis bears common factors, but there may be a big difference between individuals' symptoms, even within specific diagnoses. This wide range of symptomology means...
By Liz JonesNan Fornal
Seasonal Affective Disorder (SAD) affects people in the winter when shorter days mean less sunlight. SAD causes depression symptoms, such as listlessness, loss of appetite, irritability and lack of interest in things normally enjoyed. According to the American Academy of Family Physicians, up to a half million people suffer from SAD every year, with more experiencing milder symptoms. If you...