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.
Intellectual and Developmental Disabilities (IDDs): Overview. Intellectual and developmental disabilities (IDDs) are a primary focus of the NICHDâs research support. IDDs include a variety of different types of disabilities and disorders, including those that affect the nervous system, metabolism, and cell function and survival. The NICHD supports and conducts research to understand the causes and effects of IDDs and to help identify effective therapies for these disorders.