Calcium is needed by the body to function properly. Calcium can affect your nerves, muscles, digestive tract, kidneys, and the way your heart functions. When the calcium level becomes too high, you may develop unusual symptoms. The calcium level in your blood is normally controlled by hormones, the kidneys, and bone.
Pervasive developmental disorders: Types list. The list of types of Pervasive developmental disorders mentioned in various sources includes: 1  Autism. 2  Asperger syndrome. 3  Childhood disintegrative disorder. 4  Rett's syndrome. 5  Pervasive developmental disorder not otherwise specified (PDDNOS) - also called atypical autism.
1 While developmental disability includes many other disorders, developmental disability and developmental delay (for people under the age of 18) are generally considered more polite terms than mental retardation.