Do you know what I might have?  Curious...??? I've been experiencing the following symptoms for about 8+ months.  Has anyone else experienced the same, or know what could be wrong? 

-Headaches (usually left front and side of head).  The headaches at this point usually occur in the morning, at night, AND usually during or immediately after physical activity (exercise, walking up stairs, even after intercourse!)
-tiredness
-forgetfulness at work.  My colleagues have noticed that I have been making frequent errors, mixing up information, using the wrong words, or blanking out, etc. on a daily basis.
-numbness in the hands and arms.  Sometimes only my pinky and ring finger are numb.
-stiff neck, or spasms in my neck
I have had blood tests, an xray of my neck, and a CT scan done but they were done a long time ago when the only symptom I had were the headaches.  I was seeing a Chiropractor for 3 months (who performed ART), but it didn't help.  I have an appointment with a Neurologist next month

Summarized question: What can cause headaches, tiredness, forgetfulness, numbness in the hands and arms, and spasms in the neck?