Related Words

Affective Disorder: (ah-feck-tiv dis-or-der) A mental disorder in which the main symptom is an abnormal mood; usually depression or mania.

Bipolar Disorder: An affective disorder characterized by extreme changes in mood ranging from mania to depression. This mood disturbance is also known as manic depression.

Reactive Attachment Disorder: A condition with onset before age 5, resulting from an early lack of consistent care, characterized by a child's or infant's inability to make appropriate social contact with others. Symptom . . . View Full Definition

Polygenic Disorders: Genetic disorders resulting from the combined action of alleles of more than one gene (e.g., heart disease, diabetes, and some cancers). Although such disorders are inherited, they depend on . . . View Full Definition

Polygenic Disorder: Genetic disorder resulting from the combined action of alleles of more than one gene (e.g., heart disease, diabetes, and some cancers). Although such disorders are inherited, they depend on . . . View Full Definition

Thought Disorder: The inability to carry through a line of thinking in a way that makes sense to other people.

Schizoaffective Disorder: (skiz-o-a-feck-tiv) A condition that includes symptoms of both schizophrenia and affective (mood) disorder.

Separation Anxiety Disorder: A disorder with onset before the age of 18 consisting of inappropriate anxiety concerning separation from home or from persons to whom the child is attached. Among the symptoms that may be s . . . View Full Definition

Sleep Terror Disorder: One of the parasomnias, characterized by panic and confusion when abruptly awakening from sleep. This usually begins with a scream and is accompanied by intense anxiety. The person is often . . . View Full Definition

Single-Gene Disorder: Hereditary disorder caused by a mutant allele of a single gene (e.g., duchenne muscular dystrophy, retinoblastoma, sickle cell disease).