Krish,

Let me ask you this:

does he have sudden manifestations of things, sudden attacks--of pain, for example, or anguish, or anger?

What's his complexion, does his face turn red, for example when he's screaming?

Does he have any odd facial expressions?

Are there any muscle spasms, facial tics, odd postures, staring blankly into space, anything that could loosely be called a seizure disorder, or neurological disorder?

I hope you're not losing patience with me.

Thanks,
Snoopy