Arachnodactyly-intellectual disability-dysmorphism syndrome is a rare genetic disorder characterized by the presence of spider-like fingers and toes (arachnodactyly), intellectual disability, and dysmorphic facial features. It is caused by a mutation in the gene encoding the protein filamin A. Symptoms may include long fingers and toes, a long and narrow face, a prominent forehead, and a small chin. Other features may include a high-arched palate, a short neck, and a small head size. Treatment is supportive and may include physical and occupational therapy, speech therapy, and special education.