If you’ve ever experienced a headache that radiates from your jaw or temples, you might be dealing with a TMJ headache. TMJ stands for temporomandibular joint, the hinge that connects your jaw to your skull. It allows you to talk, chew, and yawn comfortably. However, when this joint becomes strained, inflamed, or misaligned, it can lead to a condition known as TMJ disorder (TMD) — and one of its most common symptoms is a headache.