A 15-year-old with drop attacks and unsteadiness while descending stairs

Area of Science:

• Neurology
• Genetics
• Pediatrics

Background:

• Describes a 15-year-old male with a history of mental retardation, epilepsy, and dystonic gait since childhood.
• Patient experienced recurrent, non-epileptic drop attacks triggered by dressing and stair descent, without loss of consciousness.

Observation:

• Neurologic evaluations in early childhood ruled out common genetic and metabolic disorders.
• A re-evaluation at age 15 led to a definitive diagnosis of a rare degenerative disorder.

Findings:

• The condition is characterized by down-gaze paresis, dystonia, and childhood-onset non-epileptic drop attacks.
• Clinical features suggest a specific neurodegenerative process distinct from epilepsy.

Implications:

• Highlights the importance of comprehensive neurologic re-evaluation for persistent, unexplained symptoms.
• Emphasizes the need to consider rare degenerative disorders in the differential diagnosis of childhood-onset movement and balance issues.
• Discusses conditions that may mimic this disorder, aiding in accurate diagnosis.