Neurodevelopmental condition affecting communication, behavior.

(psychology, pathology) A disorder involving any of a range of psychological conditions, all characterized by abnormal social interaction and communication, restricted interests, highly repetitive behaviour, and eccentricity.

(medicine) Any of a spectrum of birth defects and developmental disorders, including fetal alcohol syndrome, occurring in a person exposed to alcohol during pregnancy.

Hypermobility spectrum disorder, related to earlier diagnoses such as hypermobility syndrome, and joint hypermobility syndrome is a heritable connective tissue disorder that affects joints and ligaments.

Neuromyelitis optica spectrum disorders are a spectrum of autoimmune diseases characterized by acute inflammation of the optic nerve (optic neuritis, ON) and the spinal cord (myelitis).Banerjee S, Butcher R. Rituximab for the Treatment of Neuromyelitis Optica Spectrum Disorder