Is it possible to develop headaches, dizziness, depression, several years after a closed head injury?

I fell riding my bike when I was 8 and hit the back right side of my head on the pavement. I immediately began to bleed from the ear. I don't remember what the doctor said at the time. But now at 34 I've been getting more headaches (many in the same spot as the injury) and I've been diagnosed with depression and anxiety disorder. Looking back, I've also had a few dizzy spells over the years, a short temper, always been irritable, and had plenty of headaches. Only now, the headaches do not go away with over the counter medication. Also, I've had increasing pain in my neck, shoulder, jaw, and hip ALL on my right side. Could this all be related to that head injury so many years ago?

It is not only possible but I would say extremely likely that is the root of your symptoms/condition.

I would search for a very good Neurologist that specializes in TBI (Traumatic Brain Injuries) that you suffered as a child.

GOOD LUCK!

There is always a chance that it could be. I would consult with your doctor so you can have a examination to see what is up.