Ashyr , 13 days ago

No idea about this particular girl, but there's plenty of authentic disorders that can cause childhood dementia:

• Batten Disease (Neuronal Ceroid Lipofuscinoses, NCL)
• Sanfilippo Syndrome (Mucopolysaccharidosis Type III, MPS III)
• Niemann-Pick Disease Type C, GM1 and GM2 Gangliosidosis (Tay-Sachs and Sandhoff Disease)
• Leukodystrophies (such as Metachromatic Leukodystrophy and Krabbe Disease)
• Mitochondrial Disorders (such as Leigh syndrome)
• Rett Syndrome