Correct Answer: D

Rationale: The correct answer is D: increased intracranial pressure. Papilledema is swelling of the optic disc due to increased pressure in the brain. It is a sign of serious conditions like brain tumors, head trauma, or hydrocephalus. The other choices are incorrect because retinal detachment presents with visual disturbances and floaters (A), diabetic retinopathy with retinal damage due to diabetes (B), and acute-angle glaucoma with sudden eye pain and blurred vision (C). Papilledema specifically indicates increased intracranial pressure, making choice D the correct answer.

Correct Answer: B

Rationale: The correct answer is B: shadow or diminished vision in one quadrant or one half of the visual field. Retinal detachment can cause a shadow or reduced vision specifically in one quadrant or one half of the visual field due to the detachment of the sensory retina from the underlying retinal pigment epithelium. This occurs because the detached retina disrupts the normal function of the photoreceptor cells leading to visual disturbances in that specific area. A: Loss of central vision is not a typical sign of retinal detachment, as it usually affects peripheral vision initially. C: Loss of peripheral vision can occur in retinal detachment, but it is not a defining characteristic as the detachment typically affects a specific quadrant or half of the visual field. D: Sudden loss of pupillary constriction and accommodation is not directly related to retinal detachment but may be seen in other eye conditions like acute angle-closure glaucoma.

Correct Answer: D

Rationale: The correct answer is D because cranial nerve X, also known as the vagus nerve, controls the movement of the soft palate and uvula. Asking the patient to say "ahhh" assesses the function of CN X as the soft palate and uvula should elevate symmetrically. A: Observing the patient's ability to articulate specific words does not specifically test CN X function. B: Assessing movement of the hard palate and uvula with the gag reflex primarily tests CN IX (glossopharyngeal nerve). C: Having the patient stick out the tongue and observing for tremors or pulling to one side primarily tests CN XII (hypoglossal nerve).

Correct Answer: B

Rationale: Step 1: Jaundice is characterized by a yellow skin color due to elevated bilirubin levels. Step 2: Yellow color extending up to the iris indicates systemic jaundice, involving the whole body. Step 3: Yellow patches throughout the sclera (Choice A) may not indicate systemic jaundice. Step 4: Skin appearing yellow under low light (Choice C) may not be specific to jaundice. Step 5: Yellow deposits on palms and soles (Choice D) are not typical signs of jaundice. Therefore, Choice B is correct as it reflects systemic jaundice, while the other choices do not fully align with the manifestation of true jaundice.

Correct Answer: C

Rationale: The correct answer is C because the characteristics described (bleeding, not healing, ulcerated, indurated base) are indicative of a potential carcinoma, such as squamous cell carcinoma. These features raise concerns about malignancy and warrant immediate referral for further evaluation and management. Choices A, B, and D are incorrect because a benign sebaceous cyst (A) typically presents as a smooth, non-ulcerated mass, Darwin's tubercle (B) is a normal anatomical variation behind the ear and not associated with bleeding or ulceration, and a tophus (D) is a deposit of uric acid crystals seen in gout and would not present in this manner.