Answer to Question 1
Answer: 4
1. Identification of fungal infections requires a skin scraping.
2. Identification of scabies requires a skin scraping.
3. Bacterial infections are identified through culture and sensitivity testing.
4. The Tzanck test identifies herpes infection.
Answer to Question 2
Answer: 2
1. Senile lentigines (liver spots) are normal with aging, and benign.
2. Actinic keratoses are reddish, raised plaques that can become malignant and should be checked frequently.
3. Seborrheic keratosis (dark, raised lesions) is normal with aging, and benign.
4. Skin tags (excess flaps of skin) are normal with aging, and benign.