Retinitis pigmentosa is a feature of all except:
Now Hallervorden Spatz doesn't have RP as a feature. Remember RP associations by mnemonic LUCHR. *Lawrence moon Beidel syndrome *Usher *Cockayne *Hallgren *Refsum Other associations: NARP, Abetalipoproteinemia
Refsum's disease
Hallervorden-Spatz disease
NARP
Abetalipoproteinemia
Retina