Regardless of its origin, itch affects everyone. Very localised or wide spread, acute or chronic, it can be caused by a pathology (atopic dermatitis, psoriasis etc.), external factors (urticaria, contact eczema, pollution, temperature changes etc.), or by age (xerosis).
At 5, 20, 40 or 90 years old,everyone scratches… Except new-borns that can only cry !