Can acute gout attacks occur after starting uric acid-lowering medication? How should they be managed? (Yes, they may occur; prophylaxis with colchicine or NSAIDs is recommended)

美加子 里佳
美加子 里佳
Medical student studying chronic inflammatory conditions.

Hey buddy, you've hit on a common issue, many people have stumbled here.

The answer is: Very likely. And honestly, it's almost an "inevitable path" when starting uric acid-lowering treatment.

Let me give you an analogy to make it clear. The uric acid crystals in your joints are like sludge at the bottom of a pond. The uric acid-lowering medications you start taking (like allopurinol, febuxostat) work by reducing the uric acid levels in your blood, allowing the "sludge" in your joints to slowly dissolve and be excreted through urine.

The problem lies in this "dissolution" process. Once you start the medication, the uric acid concentration in your blood drops sharply, creating a huge concentration difference with the "old stock" deposited in your joints. This causes the surface of the uric acid crystals in your joints to start dissolving, shedding, and becoming unstable. When these small fragments break off, your immune system sees them and thinks: "Hey! What's this? An enemy!" It then rushes in to attack, resulting in — red, swollen, hot, painful joints, a typical acute gout flare-up.

Many people get confused at this point, thinking, "Did I take the wrong medicine? Why is it getting worse?" and then they stop the medication. This is the biggest mistake! As soon as you stop, your blood uric acid levels rise again, the crystals that just started dissolving stop dissolving, and they re-deposit stably in your joints. Everything goes back to square one, and all the suffering you endured was in vain.

The correct way to handle it is:

  1. Absolutely do not stop the medication! You must continue taking your uric acid-lowering drugs. You need to understand that this flare-up actually indicates the medication is working and helping you "clear out the old stock." It's a good sign, even though the process is painful.
  2. Proactive prevention, combination therapy. Experienced doctors usually prescribe a "preventive shot" alongside your uric acid-lowering medication, which means low-dose colchicine or non-steroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen, naproxen, or etoricoxib. These two medications act as "stabilizers," telling your immune system to "calm down, don't get agitated," thereby effectively preventing gout attacks. This preventive medication typically needs to be continued for 3 to 6 months. Once blood uric acid levels are stable and the "stock" in your joints is mostly cleared, you can stop it.
  3. What if a flare-up still occurs? If a flare-up happens despite prevention, or if you started medication without prevention, then treat it as a normal acute gout attack: immediately use sufficient doses of colchicine or NSAIDs to relieve pain and inflammation. Remember, even then, you must not stop your uric acid-lowering medication.

To summarize: When you first start uric acid-lowering treatment, gout flare-ups are a normal phenomenon, indicating the medication is working. The key is to "keep taking uric acid-lowering drugs, and follow up with anti-inflammatory drugs." Strictly follow your doctor's advice, and once you smoothly get through this period of "dissolution pain," it will be smooth sailing from there.