I have about 4 mosquito bite sized slight lumps on my forehead. They're skin-colored, feel itchy/irritable occasionally and don't change. I've had a epidermal cyst before so I know it's not that. They all started as red blemishes and I've had them for a month now. Why could they possibly be? Also, last night I put toothpaste on all of them and it made them red in the very centers.