rash from tegratol

I have a rash, it's all over my body, it may or may not be from the tegratol, I will have to go to a doctor and see, but for now my question is... is it possible to get an all over body rash all in one day after taking 400 mg tegratol for 1 and 1/2 months?  

[Dr_Aparna]

Hi,
"About 5% to 10% of people who take Tegretol have a red rash within the first month of taking it. If this happens, tell the doctor or nurse, to be sure that it's not the beginning of a serious problem. During this time, it's a good idea to avoid too much sunlight, which may increase the risk of rash.

About half the time the rash will go away on its own and will not come back. Stopping the Tegretol for a day or two (with the doctor's OK) and then starting it again seems to help. Other people need to stop taking it permanently, and some use another medicine to treat the rash itself. The doctor can advise on which is the best strategy for each person."

Qouted from http://www.epilepsy.com/medications/i_tegretol_side

Since it is not advisablr to stop the medication on your own you need to inform your doctor about this immediately.