Correct Answer: B

Rationale: The correct answer is B because unequal pupillary constriction in response to light is abnormal and may indicate nerve damage or neurological issues. A: Decrease in tear production is common with age. C: Arcus senilis is a normal age-related change. D: Loss of hair at the outer line of the eyebrows is also a common age-related change.

Correct Answer: A

Rationale: The correct answer is A: lesions that run together. Confluent lesions refer to merging or blending of individual lesions to form a larger lesion. This indicates a continuous area of involvement on the skin. Choices B, C, and D do not accurately describe confluent lesions as they refer to different patterns of lesion distribution such as annular, linear, or grouped. The key to identifying confluent lesions is the concept of merging or running together, which is best represented by choice A.

Correct Answer: D

Rationale: The correct answer is D: frenulum. The frenulum is a small fold of tissue that connects the tongue to the floor of the mouth. It helps to limit the movement of the tongue, preventing excessive movement that could lead to injury. The uvula (A) is a soft tissue dangling at the back of the throat, the palate (B) is the roof of the mouth, and papillae (C) are small raised structures on the tongue's surface. These structures are not involved in connecting the tongue to the floor of the mouth.

Correct Answer: B

Rationale: The correct answer is B: candidiasis. Candidiasis is a fungal infection caused by Candida albicans, commonly seen in immunocompromised individuals like cancer patients post-chemotherapy. The raw, red, and bleeding areas indicate mucosal irritation, while the white, cheesy coating represents fungal overgrowth. Carcinoma (choice A) refers to cancerous growths, which typically present differently. Leukoplakia (choice C) is a precancerous lesion characterized by white patches, not raw areas with bleeding. Koplik's spots (choice D) are small, white spots seen in the mouth in measles, not indicative of the described findings.

Correct Answer: D

Rationale: The correct answer is D: Elongated head with heavy eyebrow ridge. Paget's disease is a bone disorder characterized by abnormal bone remodeling, leading to enlarged and deformed bones. The elongated head and heavy eyebrow ridge are typical features seen in individuals with Paget's disease due to overgrowth of bones in the skull. A: Positive MacEwen's sign - This finding is associated with congenital hip dysplasia, not Paget's disease. B: Premature closure of the sagittal suture - This is a characteristic finding in craniosynostosis, not Paget's disease. C: Headache, vertigo, tinnitus, and deafness - These symptoms are more indicative of an inner ear disorder or vestibular dysfunction, not Paget's disease.