I suggest that you do some research onthe web as there is some really useful stuff there. Lamictal can (rarely) cause horrific skin rash, like a burn and can cause perminate scarringa nd can even be life threatening. If you take it you need to notifiy your doctor immidiatly if you develope a rash and cease treatment. the highest risk is in the first 6-8 weeks. Tha tsaid, remeember its rare.
It can also cause seizures, ironic considering it was developed as an anti epileptic drug!! Again rare.
It may have someside effects by when they are compared to similar drugs they are pretty reasonable. Lithuim will cause fluid retention and weight gain in alsmost every patient. Lamictal wont. Apparently it's easier to get off aswell.
I take lamictal as a mood stabliser. I'm on a relatively low dose and havent had any side effects. It's hard to tell as I have only been taking it for a few months but I think it has helped. I did get a few hand tremors for a couple of weeks but the were minor and passed eventually.