Clinical: Microcephalic, ADHD, mild to moderate speech delay.Lab: CD4 count 321 cells/μL (14.1%) at ART initiation and 1,099 cells/μL (33.6%) at referral.EEG: Normal awake and sleep EEG.Audiology: normal hearingNeuroimaging: Calcified mastoid air cells on CT scan, normal brain parenchymal. The gene discussed is CD4; the disease is attention deficit-hyperactivity disorder.