Objectives: The aim of the current study was to report associated problems of Poland Syndrome in a patient. Method: A 5 years old son affected to Poland Syndrome was accurately assessed. Results: The results showed the patient had communication, verbal and behavioral problems besides Poland Syndrome. Also, he received attention deficit hyperactivity disorder diagnosis and had seizure history. After accurate assessment, autistic disorder was diagnosed and occupational and speech therapy was prescribed besides treating seizure and symptoms of other problems. Conclusion: When a patient is being referred because of hyperactivity, s/he should be accurately evaluated and assessed for other psychiatric problems.