Unilateral headaches have a widespread number if causes. There's really no way for someone to know where to start looking without a physical exam. Keep track of every random symptom you can think of until your appointment.
Sparkles, Aliya is right. It could be a number of things, and keeping track of symptoms, and what you were doing when they began will be key to getting a correct diagnosis. For instance, I went through a 2.5 hr cognitive function test last Tuesday. During the process I developed a severe frontal forehead headache that lasted 2 hr beyond the test. It started while trying to figure out the most difficult parts. I'm positive it was purely stress.
I've had migraines for nearly 20 years. They use to strike me on the left side of my head, but now are more predominantly the right side.
The last doctors told me I had a brain lesion and cyst onmyvright basal ganglia. Years ago I was having it monitored until I moved to Florida. Then one doctor told me that it was typical for me to have these and not to worry about them and refused to order MRIs. So 4 years later I find a doctor who tell me it's not typical and that for the last 4 years I should have been getting MRIs and now she's worried it might be the worst case scenario. So now I have to have an MRI done this week and my fingers are crossed..
Thank you for the prayers n hugs, I suppose I wait for for this next MRI come through and this doctor who actually seems like she wants to get to the bottom of my issues, to see what it says. At from there I'd know if have MS, or the worse cancer. It just scares me, so I'm always looking for people who have symptoms like mine