abcess acne blackheads blemishes boil bump dermatology dez pain hairs inflamation pigment pimples pus pustule red rosacea skin skin problems sore spot spotty swelling teen whiteheads xymonau yellow zits razor rash bad blue-gray blue-grey citrus citrus fruit danger dangerous deterioration discolor discoloration discolour food fruit fungi growing growth mold moldy mottled mould mouldy off orange raised rotten rotting surface texture unhealthy