Sinus allergies also cause neck
muscle tension and pain that spreads to
the scalp, causes lymph nodes to
swell and put pressure on nerves that cause ear and jaw pain. Allergies can trigger pain in the face, ear, neck, head/scalp and jaw/tmjd, as well as put pressure on the perotid glands and salivary glands. I've had some triggered by using prednisone to help treat sinus and lung infections.