NEED ADVICE

Hello!

     I am mother of 5 year old autistic child,he has been completely non verbal with an exception of two words....he has been doing well as far as behaviour was concerned....his biggest issue has always been eating n communication but recently he has developed a strange behaviour of taking off his shirt,trouser n nappy ....n if i ask him to come back n wear it he doesnt listen to and sometimes starts crying and sometimes starts laughing n running............i dnt know how to deal with it....i have been trying to put on his clothes forcefully....but it becomes really difficult to hold him n make him wear ......can someone relate to this....i really need help....because i feel that i am going to lose my temper soon.............if someone can help,thanks

mommy