# Unveiling a Rare Case: Madras Motor Neuron Disease in an 18-Year-Old Patient

## TL;DR

A rare case of Madras motor neuron disease is reported in an 18-year-old, challenging assumptions about its typical age of onset and progression.

## Contribution

This is the first reported case of Madras motor neuron disease in an 18-year-old, expanding the known age range for the condition.

## Key findings

- The patient exhibited progressive limb weakness, tongue fasciculation, and hearing loss consistent with MMND.
- Neurological and electrophysiological findings supported the diagnosis of MMND in a young adult.
- Despite supportive care, the disease progressed rapidly, emphasizing the need for further research into treatment options.

## Abstract

Madras motor neuron disease (MMND) is a rare childhood or juvenile motor neuron disease. Herein, we present a unique case of MMND in an 18-year-old patient, which challenges the conventional understanding of the disease's onset and progression. The patient, a previously healthy adolescent, presented with insidious onset and gradually progressive weakness of all four limbs, wasting, tongue fasciculation, and bilateral sensorineural hearing loss. Neurological examination revealed signs consistent with lower motor neuron involvement. Electromyography (EMG) and nerve conduction studies (NCS) supported the diagnosis of MMND. The patient's clinical course exhibited rapid deterioration, leading to significant functional impairment within a short timeframe. Treatment modalities, including supportive care and symptomatic management, were implemented; however, disease progression remained relentless. This case highlights the significance of considering MMND in the differential diagnosis of motor neuron diseases, even in young individuals. It highlights the importance of conducting more studies to comprehend the underlying mechanisms and consider potential therapeutic strategies for this uncommon ailment.