The description provided by you is very brief and hence it is very difficult at thus stage to understand the basis behind such behaviors. Irritably and withdrawn behaviour as mentioned by you could be signs of psychological distress or psychiatrist disorder. In such a scenario the best advice for you is to seek a psychiatric consultation at the earliest.
The psychiatrist can then do a comprehensive assessment, followed by remedial measures to help you and your family. The treatment modality can only be commented upon after a thorough assessment.
Hope this helps you..