Dad has neck pain out of the blue, he can't move head and left side ache. Any advice?

With a sore on the left cheek plus the other symptoms you described you ought to get him to the Dr.

Could be mastoiditis. Call doc or 911. Get him seen immediately.

Don't ask him if he wants to see the doctor. He HAS to see the doctor.

It could be anything in the world.

A swollen gland. Maybe he slept wrong. A pinched nerve. Acute heart trouble. Infected tooth. Muscle spasm. It could be any number of things or it could be nothing. If one of my patients presented with neck pain and aching on the left side my first thought wouldn't be "spider bite".

I only asked because he has a large sore on his left cheek,could be infected hair and or acne...that's why I presented spider bite wondering if side effects were consistent.he doesn't want to see Dr.

Go to the ER NOW. Do not delay. If he can't move call 911.

Heck meningitis has neck pain/stiff neck as a symptom. That can kill you pretty quickly. Get him to the doctor/ER whether he wants to go or not!