Multiple System Atrophy (MSA): Symptoms, Pathophysiology, and Management

Multiple System Atrophy (MSA) is a rare, progressive neurodegenerative disorder characterized by alpha-synuclein accumulation in oligodendrocytes (glial cytoplasmic inclusions), leading to multisystem failure.

Clinical Domains

• Motor (Parkinsonian/Cerebellar): bradykinesia, rigidity, tremor, ataxia, gait instability.
• Autonomic: orthostatic hypotension, urinary retention/incontinence, sexual dysfunction, anhidrosis, thermoregulatory impairment.
• Other: dysarthria, dysphagia, cognitive changes, sleep disorders (RBD), visual disturbances.

Diagnosis & Treatment

Clinical criteria + MRI (putaminal atrophy, "hot cross bun" sign). No disease-modifying therapy; management is symptomatic: fludrocortisone/midodrine for hypotension, levodopa (limited benefit), botulinum toxin for dystonia, rehabilitation, assistive devices.

Multidisciplinary care and support groups are vital for quality of life.