I'm on day 4 of 50mg (started at 25mg for 2 weeks) and all I've noticed is headaches and migraines. With the rash, it's easy to freak out especially if you google pics. I'm on the look out for a widespread rash that looks like this:
or any sores around my eyes or mouth or genitals. That's when I'll go to the doctors. Rashes that aren't SJS are quite common with lamotrigine so I don't want to go to the drs with any old rash. That said, if you're worried, get it checked out. Better safe than sorry.
Hope that helps,
*Willow*