It sounds like you have chronic daily migraines. The prescription for the mild anti-depressant sounds like a prescription for a preventative medication. You mentioned that pain killers and decongestants don't work, how many are you taking, because these could be rebound headaches as well.
I would go back to the neurologist and talk to him / her. You need a plan. If you're taking pain killers or decongestants regularly and they're causing rebound headaches you need to wean off them slowly to stop rebound headaches - but you will also need something for the pain.
There are medications called triptans that are very good at controlling migraine pain, don't have major side effects and aren't as bad at causing rebound headaches. They are used for treating the migraine.
Then there are preventative medications (like the mild anti-depressant) and taken daily. There are many types including anti-depressants, anti-seizure, beta-blockers, calcium channel blockers, to name a few. You need to work with your neurologist to figure out what's the best course of treatment. For example, I take a beta blocker and an anti-seizure medication. I also take an anti-depressant used for chronic pain which also works on the side effects caused by the anti-seizure medication.
Then there are prescription pain medications such as narcotics, NSAIDs that are stronger than over the counter (OTC) medications and are used in an emergency and are often more effective and are thus taken less often than OTC medications. For example I take Toradol (NSAID) and Tylenol 3s (Narcotic - use it very rarely now).
Educate yourself and if your neurologist won't work with you, find another one. Unfortunately there isn't a cure for migraines but it is possible to find a combination of lifestyle changes / choices and medications that can make life bearable.
Good luck. Let us know how it goes.
somaa what you are describing with the constant head pressure happens with me also. what i have found to be the cause is a rise in blood pressure. normally i do not have high blood pressure but there are times when it shoots up there. try taking an aspirin and taking it easy resting when that happens - that's the only thing that seems to help when it happens to me. also when you are experiencing the pressure find a way to get your blood pressure taken i bet thats what it is.
good luck to you,
the doctor has tried me on a few different blood pressure meds to see if it would help my headaches, but unfortunately i have had bad reactions to all of them. normally i do not have high b/p so the med makes it too low and me really ill. however my b/p does shoot up there at times- especially when i'm in pain.
you know i've been thinking i wonder if there is really such a thing as hemiplegic migraine. i mean i've been diagnosed as having that, but what if it's really undiagnosed tia or mini stroke??? i've had a CAT scan and MRA after my first hemiplegic migraine a couple years ago, but no scans since. does anyone know if this could be possible (to have a TIA or mini stroke and not have it show on the scans)? my symptoms are exact to that so i worry. i lose vision in one eye, get confused, cannot even remember simple things, have numbness and weakness in one side of my body, get nauseated, with severe headache following.