The crossword solution for the term SPOTS TO CONCEAL is ACNE, which is a four-letter word. ACNE is a common skin condition that is characterized by pimples, blackheads, and whiteheads on the face, neck, chest, back, shoulders, and upper arms. It is caused by the overproduction of oil in the sebaceous glands, which can be triggered by hormones, stress, and certain medications. ACNE can be difficult to conceal, as it often leaves behind dark spots and scarring.