A 57-year-old man, previously asymptomatic and on no medications, develops a painful left big toe. It is so painful that even the weight of his sheets is excruciating. On examination, there is a swollen red toe. Which of the following medications is relatively contraindicated?

**Core Concept**
Gout is a form of inflammatory arthritis characterized by sudden, severe attacks of pain, swelling, redness, and tenderness in one or more joints, most often the big toe. The condition is caused by elevated serum urate levels, leading to urate crystal deposition in the joints.

**Why the Correct Answer is Right**
The patient's symptoms are consistent with acute gout, which is often precipitated by factors such as diet, dehydration, or certain medications. Medications that decrease uric acid excretion or increase uric acid production can worsen gout. Colchicine, NSAIDs, and corticosteroids are often used to treat acute gout attacks. However, certain medications like aspirin and thiazide diuretics can increase serum urate levels by decreasing urate excretion, making them relatively contraindicated in gout.

**Why Each Wrong Option is Incorrect**
* **Option A:** Allopurinol is actually used to prevent gout attacks by reducing uric acid production. It is not contraindicated in gout.
* **Option B:** Colchicine is often used to treat acute gout attacks. It is not contraindicated in gout.
* **Option C:** Corticosteroids can be used to treat acute gout attacks by reducing inflammation. They are not contraindicated in gout.
* **Option D:** Actually, the correct answer is **D. Aspirin**.

**Clinical Pearl / High-Yield Fact**
Aspirin can precipitate or worsen gout attacks by decreasing urate excretion. This is because aspirin inhibits the renal tubular secretion of urate, leading to increased serum urate levels.

**Correct Answer:** D. Aspirin.

✓ Correct Answer: D. allopurinol