Aorta Iliac Ultrasound. Ultrasound can be used to image the aorta and iliac arteries to detect medical conditions affecting blood flow. Ultrasound technology is safe and images arteries and veins. There is no radiation or injection of chemicals for this study.
Earwax blockage Sometimes ear wax can harden and block the ear canal, causing discomfort and itching, earache, and more. Acute sinusitis Acute sinusitis, an inflammation of the sinuses, causes sinus pain and tenderness, facial redness and more.
Besides the 2 listed above, there are other kinds of headaches that can cause sharp pain behind ears: 1  Cold-stimulus Headache, also known as ice-cream headache. 2  Cervicogenic Headache. 3  Primary Yawning Headache. 4  Headache After Acoustic Neuroma Surgery. 5  Nummular Headache.