Search Results: suddenly shy

He's currently 6 years old but it's been 8 months (2 months shy of his 6th d-day) that all of the suddenly, he lost his speech. He can barely speech and stutters too much. I've lately noticed this:
- He still plays video gyames but is more quiet than usual
- He drew a small boy and a large monster with a cape chasing him. Other two pictures were about dark clouds and the same monster.
- He wants to seat on my lap too much and says ''meee, I, um, I... scarrrreeed offf mon-mon-ter''.
- He's been writing certain adult terms he can't even understand too much.
- He says hi to others except this particular relative (my grandmother's adult nephew, let's call him Mike). On two occasions, he tried to say hi or hug him, he ended up screaming and crying saying ''Let me go, don't touch me, nooooooooooooooooo'' very clearly. Those are one of the few words he can clearly and loudly say. He seems to really hate that guy.
- Several months ago when none of us could have visitors, Mike wanted to suddenly visit my grandmother too much. He rarely visited her but it's been nearly 2 years since he has shown an interest to visit grandma a lot.
- When he left, my godson was smiling and playing again

I'm thinking something sinister could have happened. Am I jumping to conclusion or is my gut instinct right on this one?