Mechanical abrasions or injuries to the epidermis are known as:

• A. Ulcers
• B. Papules
• C. Excoriations
• D. Vesicles

Answer: (C)

Verified step by step guidance

1. Understand the structure of the skin: The epidermis is the outermost layer of the skin, primarily responsible for protection. It is composed of keratinized cells that act as a barrier against mechanical damage, pathogens, and water loss.
2. Define the term 'excoriation': Excoriations are mechanical abrasions or injuries to the epidermis caused by scratching, rubbing, or scraping. These injuries typically result in the removal of the superficial layers of the skin.
3. Differentiate between the other terms provided: Ulcers are deeper lesions that extend into the dermis or subcutaneous tissue, often caused by prolonged pressure or poor circulation. Papules are small, raised bumps on the skin, often associated with conditions like acne or dermatitis. Vesicles are fluid-filled blisters that form in the epidermis, commonly seen in conditions like chickenpox or herpes.
4. Recognize the correct term based on the description: Since the problem specifies mechanical abrasions or injuries to the epidermis, excoriations are the most appropriate term as they directly refer to superficial damage caused by external mechanical forces.
5. Apply this understanding to similar scenarios: When identifying skin injuries, always consider the depth, cause, and appearance of the lesion to determine the correct terminology.