**Core Concept**
Gout is a form of inflammatory arthritis caused by the deposition of monosodium urate (MSU) crystals in the joints, leading to intense pain and inflammation. The primary goal of acute gout treatment is to reduce inflammation and alleviate pain.

**Why the Correct Answer is Right**
The first-line treatment for acute gout is nonsteroidal anti-inflammatory drugs (NSAIDs) such as indomethacin, ibuprofen, or naproxen. These medications work by inhibiting the enzyme cyclooxygenase (COX), which is responsible for the production of prostaglandins, mediators of inflammation. By reducing prostaglandin synthesis, NSAIDs decrease the production of inflammatory cytokines, such as interleukin-1 beta (IL-1β) and tumor necrosis factor-alpha (TNF-α), which contribute to the inflammatory response in gout.

**Why Each Wrong Option is Incorrect**
**Option A:** Colchicine is an alternative treatment for acute gout, particularly in patients who cannot tolerate NSAIDs. However, it is not the first-line treatment.

**Option B:** Corticosteroids, such as prednisone, can be used to treat acute gout, especially in severe cases or in patients who cannot tolerate NSAIDs or colchicine. However, they are not the primary treatment choice.

**Option C:** Colchicine and NSAIDs are the primary treatments for acute gout. However, allopurinol is a xanthine oxidase inhibitor used to prevent gout attacks by reducing uric acid production in the body, not to treat acute gout.

**Clinical Pearl / High-Yield Fact**
Remember the "ABC" of gout treatment: A (allopurinol) for prevention, B (colchicine or NSAIDs) for acute treatment, and C (corticosteroids) for severe cases.

**Correct Answer:** A. Indomethacin.