Do you suffer from a stabbing headache in the areas denoted in red? Do these headaches seemingly come out of nowhere one day? Perhaps started after a viral upper respiratory infection? You may be suffering from a condition known as contact point headache . This type of headache is also known as: • Sluder's neuralgia • Anterior ethmoid neuralgia • Sphenopalatine ganglion neuralgia • Pterygopalatine ganglion neuralgia This type of headache has often been confused with cluster heada…