Please help me!
When I walk, stand-up, or do strenuous exercise, I feel as though there is insufficient blood/oxygen going to my brain, which leads to some of my muscles involuntarily stiffening and bad headaches.
I'll explain the whole story.
It first started about 3 years ago when I was preparing for a football match. Having done some step ups, I felt a light-headed sensation. It was certainly wierd, but not dehabilitating and lasted about 2 seconds.
Unfortunately, it got progressively worse from here, and I found myself unable to sprint without this sensation (but worse than the abovementioned).
I went to the doctor concerning this, and they explained that I had rhinitis, which meant my nasal passages had swollen most likely due to allergy. I was given some medication for this, and low and behold, it really did help ease the problems.
However, more recently, I was at work and found myself struggling to walk without such a sensation - very difficult when I'm expected to show customers around.
I went to the doctor who seems slightly unsure as to what this was, having assured me my blood pressure was at a suitable level, whilst my heartbreat was regular. I've been sent for some blood tests, but have been told not to get my hopes up about finding a diagnosis.
Therefore, I'd really appreciate if anyone could help.
Basically, I have a tendency to lose oxygen to my head - like the sensation you get when you quickly stand-up - when generally walking, whilst my neck begins to stiffen. As a result, I tend to suffer from headaches.
If it helps, I used to have really bad sinus problems as a child, although tests confirmed I didn't have sinusities. However, I still feel pain in my sinuses every now and again, and when I lean forward, I can sometimes really feel pressure around the area.
However, I don't want to lead you with the latter point, because it's something I've only just really thought of as potentially significant, and I would appreciate any advice that is given.