**Core Concept**
Acute gout is a medical emergency caused by the deposition of monosodium urate crystals in the joints, leading to intense pain and inflammation. The treatment of acute gout involves reducing inflammation, relieving pain, and preventing further crystal deposition.

**Why the Correct Answer is Right**
In patients where NSAIDs are contraindicated, colchicine is the preferred treatment option for acute gout. Colchicine works by inhibiting microtubule polymerization, which reduces neutrophil migration and subsequent inflammation in the affected joint. It is particularly effective in reducing the pain and inflammation associated with acute gout attacks.

**Why Each Wrong Option is Incorrect**
**Option A:** Corticosteroids, such as prednisone, are not the first-line treatment for acute gout in patients where NSAIDs are contraindicated. While corticosteroids can reduce inflammation, they are not as effective as colchicine in this specific scenario.
**Option B:** Allopurinol is a urate-lowering therapy used to prevent future gout attacks, but it is not the treatment of choice for acute gout attacks, especially in patients where NSAIDs are contraindicated.
**Option C:** Colchicine is the correct answer, so this option is not listed.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that colchicine should be used with caution in patients with renal or hepatic impairment, as it can be hepatotoxic and nephrotoxic.

**Correct Answer: C. Colchicine.**