muscle cramping and weakness after use

I am a 28 yr male. I have had muscle cramping, weakness, and slight spasms after light activities such as lifting 25 pounds.  I have had normal EMG, MRI of Brain w/o contrast and CT scan.  I also have pain in neck and dizziness occasionally but not related to activity.  I have also had normal stress test and thallium test.  My labs have shown high cpk once 253, high rbc count once.  Any ideas of where to go with this.  I am about tested out.

It seems to get better if I rest the muscles (about two days) but become weak again after activity.
In the beginning I would be fatigued but now it is just muscle weakness.

Thanks.

[caregiver222]

First of all, is is impossible to perform a diagnosis over a bulleten board. Plus, my opinion is pretty worthless, according to every woman I have ever known. Youy symptoms suggest a calcium-channel issue. Systemic muscle weakness is often related to a problem with calcium transfer within the muscle cells. The solution may be as simple as taking a calcium supplement or drinking two glasses of milk a day. There are other more serious possibilities best evaluated by a teaching hospital, but give your-self a "calcium challange" by drinking a quart of milk every day for three days and see if your symptoms improve.

[Derek402]

Thanks for your response.  I will try that.  I usually drink a decent amount of milk a day but I wonder if any medications that I am taking could be causing this.  i am on exforge a bp medicine and zantac.

Any thoughts about the meds.

Thanks.

[Derek402]

Could this be related to parathyroid glads?

[noops01]

Hi Derek,
I think there is a possibility that your BP medication is the cause. Exforge comprises of valsartan and amlodipine. Amlodipine is a calcium channel blocker and is known to cause muscle cramps which is not a very common side effect but occurs nonetheless. Please discuss this with your treating physician so he can either adjust the dose or switch to another drug.

[Derek402]

Thanks for the response, the only thing is that it started before they switched me to Exforge.  I was on Labetalol before that and had symptoms.