Got Psoriasis? 7 Signs You Have Arthritis Too
Psoriatic arthritis, a type of arthritis that affects people with the skin condition psoriasis, can attack the joints and tendons.
About 22% of people with psoriasis who have not been diagnosed with psoriatic arthritis appear to have symptoms of the condition, such as joint pain, swelling, and warmth, according to a 2011 survey by the National Psoriasis Foundation (NPF).
Based on the survey, which included 477 people and was funded by pharmaceutical companies, the NPF now recommends that doctors ask psoriasis patients these seven questions.
Do your joints hurt?
Mark McGraw, 52, had joint pain for more than 15 years before he mentioned it to his doctor. "I just figured it was from playing tackle football or breaking horses at my ranch," he says. When the topic finally came up, his doctor asked why he had never mentioned it before.
"'Because you're my dermatologist,'" he recalls saying. "'We talk about skin, not joints.'"
Are your joints stiff or tender?
McGraw takes medication that provides some relief and delays joint damage. But he still has pain and stiffness, especially if he doesn't get enough rest.
Since he's often on the road for his medical-sales job, his company allowed him to use an SUV that lets him step up into the driver's seat rather than bend down.
Are your joints red, or hot to the touch?
In the survey, 28% of psoriatic arthritis patients said their joints sometimes felt hotbut so did 9% of those who had only a psoriasis diagnosis.
Are your joints swollen?
This can be misdiagnosed as rheumatoid arthritis, but unlike RA, psoriatic arthritis may not affect both sides of the body the same way.
"I pointed to my fingers, my left wrist, and my right ankle," McGraw says he recalls doing when speaking with his doctor. "'Now that you mention it, my joints are painful and swollen.'"
Do your fingers and toes swell like sausages?
In the survey, 28% of psoriatic arthritis patients (as well as 9% of psoriasis-only patients) said their fingers and toes occasionally became swollen, making them look like sausages.
Because this symptom is much less common in other types of arthritis, it can help doctors distinguish it from other types of arthritis.
Do you have nail changes?
It's much more prevalent in people who have both conditions, however.
"That can be a tip-off to doctors that the person might have psoriatic arthritis, but there have to be other symptoms," such as joint pain and inflammation, she says.
Do you have back pain?
Indeed, 49% of the survey's psoriatic arthritis patientsand 31% of those without an arthritis diagnosisreported back pain. Often the back pain includes stiffness and burning.
Back pain sometimes is the only symptom of psoriatic arthritis, Dr. Reddy says. But the condition also can cause pain in the neck, feet, and pelvis.
Why diagnosis matters
Dr. Reddy says she isn't surprised, and says that several independent studies have found psoriatic arthritis to be an underdiagnosed condition.
The longer arthritis goes untreated, however, the more damage it can do. It also affects quality of life: In the survey, 63% of psoriatic arthritis patients reported not being as active as they once were, and 47% said their disease impairs their ability to work.
Life after diagnosis
But he's thankful he caught the disease before it did further damage. He says he believes his active lifestyle helped keep his arthritis at bay.
"This year alone I've probably climbed eight mountains," he says. "And I do a lot of weightlifting. In fact, I find that when I miss the gym, that's when I start to get sore."