I suspect that the 'blotchiness' I keep running into on the sides of my dome might have something to do with me being a lazy bugger sometimes & letting my hair grow for a few days sometimes. I'm going to try shaving every day and see if that will toughen up my scalp so that doesn't happen anymore...
You might want to try a little dab of hydrocortizone creme after shaving and before something like Nivea Extreme---unless it's an allergy or a contact dermatitis that should help tone down the skin reaction.