Many of us here have chronic daily headache (CDH)--which generally means that you experience 15 or more headache days per month--and even daily persistent headache--meaning that you experience a headache every day, 24 hours a day. I have had daily persistent headache for six and a half years now and you'll come across some people that have been through chronic or persistent headaches for a good bit longer too. This comes up in discussion here quite a bit. If you search the forum for "chronic daily headache" or "new daily persistent headache" you'll find a lot of good content.
DX: NDPH, Recovered CRPS
RX: Lamictal, Concerta (Methylphenidate), Clonazepam, Wellbutrin XL, Namenda, Oxycontin, Oxycodone, Melatonin, Magnesium supplements.
PRN: Ketamine nasal spray, Celebrex, Migranal, Haloperidol, Zyprexa, Lodine, Zofran, Phenergan, Thorazine, DHE IM, Droperidol IM, Toradol, Reglan, Ambien CR, Provigil, and all triptans