Final answer:
Fissure is a skin lesion that appears as cracks or lines due to exposure to wind, cold, and water. It is commonly seen on the lips and hands.
Step-by-step explanation:
is a skin lesion that usually appears as cracks or lines and often occurs when the skin loses its flexibility due to exposure to wind, cold, and water. It is typically seen on the lips and hands. For example, cheliosis, which is the presence of cracks or sores on the outer surface of the lips, is a type of fissure.
Other examples of skin lesions include stains, papules, and tumors, but these do not match the description given in the question.