Though affected children can have severe developmental delays, they typically learn to walk between 4 and 6 years old. Intellectual disability in affected individuals does not worsen over time; some affected individuals see their symptoms become less severe.
Börjeson–Forssman–Lehmann syndrome
Wallis–Zieff–Goldblatt syndrome
Hamman's syndrome
Zieve's syndrome
Ho–Kaufman–Mcalister syndrome
Grinspan's syndrome
Susac's syndrome
Bertolotti's syndrome