I have been on lamictal for over 3 years ... was at 400 but when we upped my dioxin I developed a rash over my arms and legs ... urgent care had me drop dioxin that day ... I dropped my lamictal to 200 over a few weeks .... now ... no one is sure if any of this was med related ... three dr's ... one says yes .. one no ... and my personal gp has no idea ... it has been 2 full months since this began ... the physical whelps and blisters are almost gone ... but the itching ... still there but thankfully so much better now .... I'm there with you ... but I can not even find out what has happened to me ... but unless you are super sensitive it is hard to believe such a low dose and so soon .... could cause this ... all I can say is make sure your dr is 100% aware of what is happening to you ... hope it gets better ...