Is it normal for a flat mole to begin to hurt and look like a pimple?

NO: any changing mole must be seen and evaluated by a dermatologist: never ignore these changes.

No >see your doctor: If you have noticed a change in size, shape or color of a mole you must see a physician to be sure the mole hasn't developed into a malignant melanoma. Signs of melanoma: ABCDEFG Asymmetry Borders (irregular) Color (variegated) Diameter (greater than 6 mm (0.24 in), about the size of a pencil eraser) Evolving over time Elevated above the skin surface Firm to the touch Growing