A<unk>  is any<unk>  of the nervous system. Structural, biochemical or electrical abnormalities in the brain, spinal cord or other nerves can result in a range of symptoms. Examples of symptoms include paralysis, muscle weakness, poor coordination, loss of sensation, seizures, confusion, pain and altered levels of consciousness. There are many recognized<unk> s, some relatively common, but many rare. They may be assessed by<unk>  examination, and studied and treated within the specialities of neurology and clinical neuropsychology. Interventions for<unk> s include preventive measures, lifestyle changes, physiotherapy or other therapy, neurorehabilitation, pain management, medication, operations performed by neurosurgeons or a specific diet. The World Health Organization estimated in 2006 that<unk> s and their sequelae (direct consequences) affect as many as one billion people worldwide, and identified health inequalities and social stigma/discrimination as major factors contributing to the associated disability and suffering.
Neurological disorder
Central nervous system disease
Brain damage
Endocrine disease
Musculoskeletal abnormality
Neuromuscular disease
Hematologic disease
Disease