Spinal-bulbar muscular atrophy - Muscular Dystrophy Queensland

Spinal-bulbar muscular atrophy (SBMA) also known as Kennedy disease

Spinal-bulbar muscular atrophy (SBMA) is caused by the loss of motor neurones (the nerve cells in the spinal cord and brainstem) that control the voluntary movement of muscles.

The name bulbar refers to a bulblike structure in the lower part of the brain that contains nerve cells responsible for controlling muscles in the face, mouth, and throat.

SBMA is most commonly diagnosed in adults between the ages of 20 and 50. Symptoms include muscle weakness and cramps in the arms, legs, and facial region, enlarged breasts, and difficulty speaking.

The facial and swallowing muscles, as well as the arm and leg muscles, especially those nearest the center of the body, are especially affected.

Spinal-bulbar muscular atrophy

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