What is the Best Way to Diagnose Gout in the Big Toe Joint?

An attack of gout that affects your big toe joint may be one of the most painful conditions you can have in your foot. When gout strikes, you get pain, redness, swelling and extreme tenderness...usually in the big toe joint. If you think you have gout, you probably want to make sure that you get the right diagnosis. Getting the correct diagnosis is important for two reasons.

1. You want to make sure you get the best treatment as quickly as possible.
2. You don't want to have to change your diet and start the dreaded gout diet unless you're absolutely certain that you actually do have gout.

Gout is actually caused by uric acid crystals accumulating in the foot. The crystals actually get deposited as the precipitate out of your bloodstream and become embedded with in the big toe joint, a bursa, or even within the tendons near the joint at the base of the big toe.

There are 5 ways to diagnose gout in the foot
1. Physical exam by a podiatrist
2. X-rays of the foot
3. Blood tests to look for high uric acid levels
4. Joint fluid analysis from the big toe joint
5. Cytology (fluid analysis under a microscope)

This video, posted by San Francisco's Housecall Podiatrist, discusses all of the ways in which your doctor can arrive at a diagnosis of gout. Because gout is a condition in which uric acid crystals actually get deposited in the soft tissues of your foot in your big toe joint, it is important to actually identify those crystals in order to accurately make the diagnosis of gout.

Physical exam (even by a podiatrist) is not 100% accurate simply because gout also mimics other conditions such as an infection in the soft tissues around big toe joint, infectious arthritis of the big toe joint, or even conditions that affect diabetic patients such as Charcot foot, where the foot bones start to break. All of these conditions can present themselves with redness swelling and extreme pain around the big toe joint. Physical exam by itself is just not the best way to diagnose gout.

Foot X-rays are almost always performed in a doctor's office when you have a red hot swollen foot in order to make sure that you don't have a dangerous infection or a fracture in the foot that could be just appearing like it is gout. But x-rays of the foot won't typically show much when an attack of gout has recently started.

Blood tests in order to determine whether or not you are one of the patients that has a high level of uric acid in their bloodstream (and more prone to gout) are not really effective at determining whether or not the pain and swelling around your big toe joint is really caused by the crystals in your joint. In fact, often times these tests are negative, misleading doctors to think that you might not have gout.

A more reliable way to determine whether or not the pain in the big toe joint it's actually caused by count crystals is to perform a joint aspiration where the fluid is removed from the joint to see if there is any chalky white material that looks like collections of gout crystals. This is much more reliable than physical exam, foot x-rays, or even blood tests.

But by far the most reliable way to make the diagnosis of gout is through cytology. This is where your doctor takes the joint fluid that was removed through joint aspiration and then sends it to the pathologist so that they can look for the actual gout crystals under a polarized light microscope. If you do have an attack of gout that is causing the pain in your big toe joint, the pathologist will be able to see needle shaped uric acid crystals within the joint fluid. This is a 100% accurate method of diagnosing gout in the foot.

Dr. Christopher Segler is an award-winning foot and ankle surgeon and sports medicine podiatrist practicing in the San Francisco Bay area. He provides housecalls for people with gout in San Francisco, Marin, Mill Valley, Tiburon, Oakland, Berkeley and Palo Alto. To learn more about the causes and treatment of gout in the big toe joint, visit the gout information page at www.AnkleCenter.com. if you would like to learn about how to get the fastest treatment possible for gout, you can learn more at www.DocOnTheRun.com.

Do I Have Gout in the Big Toe Joint

Gout is one of the most painful conditions I see as a Podiatrist in San Francisco. Usually gout attacks the big toe joint. The question is, how do you tell if you are having an attack of gout in the foot?

When gout happens the first thing you will notice is pain, swelling and redness around the joint. In the foot this is most often the base of the big toe in the joint podiatrists call the "metatarsaophalangeal joint." Gout can happen in any of the joints in the foot, but usually it the big toe joint.

When gout develops, you get uric acid crystals forming and being deposited in the joint itself. If untreated, the crystals may continue to form and lead to the buildup of a chalky paste-like substance called tophi. You can see the huge lump on the bottom of the big toe joint in the picture above. All of that is uric acid crystals in the joint.

Because these sharp needle-shaped crystals end up in the joint, it can be incredibly painful to move the joint. Every time you move the big toe, it is like having a thousand little needles poking the inside of the joint. This of course hurts.

In response, your body reacts with inflammation. That is where the classic pain swelling and redness comes in. The foot will be warm to the touch, red and very painful. Many gout sufferers will say they can't even have a bed sheet touching the foot because it is so painful.

The biggest problem with trying to tell if you actually have gout is that gout mimics two other conditions: infectious arthritis and Charcot. Charcot arthropathy is an emergency that can look like gout, but is actually more serious. It is most common in people with diabetes. Infectious arthritis is where bacteria (instead of uric acid) is invading the joint. Both of these are emergencies. With either, it is important to start treatment right away to prevent further damage and the potential for losing the foot to an amputation.

Many people who have had multiple attacks of gout can seem to tell when it is coming on. However, if you have never been diagnosed with gout, it is important to see a foot specialists who can make sure you don't have a more serious condition.

The most accurate way for your podiatrist to diagnose gout is through a small procedure called joint aspiration. In this way, the uric acid crystals in the joint can easily be identified. More importantly, your foot doctor can rule out a bacterial infection. Blood tests and x-rays may give clues that you have had gout, but can be unreliable if used alone to diagnose gout.

Once you have been diagnosed with gout, your podiatrist will likely make recommendations on modifying your diet to prevent it from happening again. You can view our recommendations on a Gout Diet here. If you are given a prescription to treat the gout, you will be given written instructions that you should follow closely.

Dr. Christopher Segler was selected in 2010 as one of "America's Top Podiatrists." He has a podiatry house calls practice in the San Francisco Bay Area. To learn more about gout, visit the Gout page on our website. If you have gout and need pain relief right away, he makes podiatry emergency house calls 24/7. If you think you might have gout and would like to speak directly with him to ask a question, you can call him (415) 308 0833.