Which of the following is "a linear crack extending from the epidermis to the dermis?"

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A fissure is a linear crack or tear that extends from the epidermis to the dermis. Ulcers are usually circular or irregularly shaped lesions that involve loss of the epidermis and at least part of the dermis. Lichenification is a thickening and hardening of the skin due to chronic irritation or scratching. Excoriation is a superficial loss of the epidermis that appears as a linear abrasion or scratch.

Which of the Following Is "A Linear Crack Extending from the Epidermis