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An anxious mother brings her 4 year old son to clinic for a new patient visit. She say that her son was progressing well and meeting all milestones until three months ago. Since then, she and her husband have noticed a marked restriction in the boy’s activities. He keeps o himself, refuses to play with his siblings, speaks only when spoken to, and appears indifferent to the presence of others. Attempts to engage the child in conversation are unsuccessful. He seems disinterested and refuses to make eye contact. While in the examination room, he starts banging his head against the wall, Given his clinical presentation, which of the following is the most likely diagnoses?
What is Childhood disintegrative d/o. Childhood disintegrative disorder is a rare pervasive developmental disorder that occurs more commonly in males. It is characterized by a period of normal development for at least 2 years, followed by a loss of previously acquired skills in at least 2 areas: language, social skills, bowel and bladder control, or play and motor skills.