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What is the youngest age to get MND and what causes juvenile cases?

Motor neuron disease (MND), primarily an adult-onset condition with an average age of 55, can, in rare cases, affect people significantly younger, even from birth. A diagnosis of juvenile amyotrophic lateral sclerosis (JALS), a form of MND, is defined as an onset before the age of 25. The youngest age to get MND typically depends on the specific genetic mutation, with some types presenting in infancy or even prenatally.