My husband has been going through severe pain from his tooth, at first I thought it might be an abscess but there's no pus, his back top molar tooth broke apart many times an after that a tooth like bump appeared an it was black it was easy to pull out piece by piece but now, he's in excurutiating pain, on top of his normal bad headache now there ten times as worse, it's unbareable, he can't sleep, it is sensitive to eat. Everytime he lays down to sleep his teeth will start throbbing and then from that he gets headache that causes mild seizers an he can't function at all. I just wanna know what is wrong with his tooth an why he's getting these unbareable headaches an what can it lead to if untreated, or at what severity is it at now? Please help, can he have something wrong with his brain at this point an is it going to be the death of him?