You know what it looks like… but what is it called?
TAKE THE QUIZ“lateral sclerosis”
We have one entry that includes the term lateral sclerosis.
amyotrophic lateral sclerosis
noun: a rare progressive degenerative fatal disease affecting the motor neurons, usually beginning in middle age, and characterized especially by increasing and spreading muscular weakness and atrophy —abbreviation ALS
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Merriam-Webster unabridged