Hello, Kristiemarie, I can tell you only what my psychiatrist told me about Lamictal.

She said to watch it carefully for the first two weeks or so because that's when the
syndrome is most likely to appear on the back of the neck (itching and rash).

Since you're having a reaction, it's good that you're calling your psychiatrist, in my view. The condition can be dangerous if it is not corrected in a short while after it begins. It's good that you're stopping both meds until you can get in touch with your doctor.

Take care and try not to worry. It is something that can be corrected.