Wing-beating tremor
AR copper · TREATABLE
GeneATP7B · 13q
MechanismImpaired biliary copper excretion →
copper in liver, brain, cornea
InheritanceAutosomal recessive
Onset5–35 yrs (hepatic young; neuro in teens/20s)
A young patient with a movement disorder, liver disease and Kayser-Fleischer rings — and it's treatable.
Key clinical features
- Wing-beating tremor, dysarthria
- Dystonia, parkinsonism, ataxia
- Risus sardonicus (fixed grimace)
- Psychiatric & cognitive change
- Liver disease (any young hepatitis)
- Kayser-Fleischer rings
◆ Signature clue
Young movement disorder + Coombs-negative hemolytic anemia / liver disease + KF rings + low ceruloplasmin → Wilson. Midbrain “face of the giant panda” sign.
Diagnosis
Low ceruloplasmin, ↑ 24-h urinary copper, KF rings (slit-lamp), ↑ hepatic copper; ATP7B testing.
Management
Trientine preferred first-line for neuro Wilson (penicillamine can worsen neuro early); zinc for maintenance; low-copper diet; transplant if fulminant.