What AMYOTROPHIC LATERAL SCLEROSIS means: Amyotrophic Lateral Sclerosis - (ALS) is a disease of unknown cause characterized by slowly progressive degeneration of upper (UMN) and lower motor neurons (LMN). The UMN findings include hyperreflexia and spasticity. They result from degeneration of the lateral corticospinal tracts in the spinal cord. The LMN findings include weakness, atrophy, and fasciculations. ALS is eventually fatal because of respiratory muscle weakness.
- Definition Adrenoleukodystrophy:
- Dictionary Adrenoleukodystrophy - is one of a group of genetic disorders called the leukodystrophies that cause damage to the myelin sheath, an insulating membrane that surrounds nerve cells in the brain amyotrophic lateral sclerosis.
- Definition Agenesis Of The Corpus Callosum:
- Dictionary Corpus Callosum - (ACC) is a rare birth defect (congenital disorder) in which there is a complete or partial absence of the corpus callosum. Agenesis of the corpus callosum occurs when the corpus amyotrophic lateral sclerosis.
- Definition Apraxia:
- Dictionary neurological disorder characterized by loss of the ability to execute or carry out learned purposeful movements, despite having the desire to and the physical ability to perform the movements. It is amyotrophic lateral sclerosis.
- Definition ADHD:
- Dictionary Deficit Hyperactivity Disorder (ADHD), or Hyper-kinetic Disorder as officially known in the UK (though ADHD is more commonly used), is generally considered to be a developmental disorder, largely amyotrophic lateral sclerosis.