Re: Sinus/earache/crackling headache
TMJ stands for Temporomandibular Joint. It's the actual name of the joint that connects your jaw to your ear. When it's not aligned properly it causes horrible pain around your ears, jaw, temples, forehead, behind the eyes, neck, and shoulders. Some people have few of these symptoms, others and can have them all. The disorder can be caused from a trauma or blow, such as whiplash from a car accident or sometimes there is no physical cause. Some people experience a popping or crackling noise when they open their mouth or when they chew food. It's pretty odd, but maybe you could check it out on the Web or the other board. Couldn't hurt! Wish you the best.