Anyone else itchy?

I’ve been on Wellbutrin for a while at 150mg. Moved up to 300mg about 6 days ago and can’t help but notice since increasing I’ve felt pretty itchy at times. Usually my scalp area, and upper body. I don’t have any rashes or bumps but it is annoying. Should this be a cause for concern? I just want to make sure this isn’t an allergic reaction.