Pimples en masse are called acne or officially acne vulgaris. Vulgar(is) meaning common rather than vulgar meaning uncouth. Common or uncouth, acne is better absent than present. A

Rosacea, from the Latin word rosaceus, meaning ‘rose coloured’, describes the main feature of rosacea: rosy red skin. Sometimes known as acne rosacea or adult acne, rosacea is