Hi,
It is important to know if you have positive history of migraines. If yes then there is a possibility is these sharp severe headaches are ice pick headaches.
http://www.*************.com/migraine/types-of-headaches-35919-5.html
There are other possibilities also like neuralgias, sinusitis and allergies which need to be looked into.
I would suggest you to seek a second opinion on this.
Thanks
for each individual headache, how long does the pain usually last for?