Statistics reveal that up to 30% with psoriasis - a common skin condition that speeds up the life cycle of skin cells and causes cells to build up rapidly on the surface on the skin - will develop psoriatic arthritis disease, an autoimmune disease that can cause pain, stiffness and swelling in the joints.
Generally speaking, there are five subtypes of psoriatic arthritis disease, which depend on which and how many joints are affected. Interestingly, you can have one type of psoriatic arthritis disease initially and develop a different type later on.
Namrata Singh, clinical assistant professor of medicine at the University of Iowa Carver School of Medicine, says it's important to know about the five forms of psoriatic arthritis disease as they provide a “bird's eye view” of the condition and can help guide therapy. Read on to learn all about them.
Five types of psoriatic arthritis disease
#1: Symmetric polyarthritis
Symmetric polyarthritis is the most common form of the condition and accounts for around 50% of all cases. This form is “symmetric” because it affects the same joints on both sides of the body. It’s very similar to rheumatoid arthritis
, another autoimmune disease, in this sense. This type of psoriatic arthritis
disease usually impacts five or more joints anywhere throughout the body.
#2: Asymmetric oligoarticular
Asymmetric oligoarticular psoriatic arthritis
disease affects approximately 33% of people with the condition. This type is “asymmetric” is because a joint on one side of the body is affected, while the identical joint on the other side remains healthy. This type of psoriatic arthritis disease usually impacts no more than four or five joints, also anywhere throughout the body.
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#3: Distal interphalangeal predominant
Around 20% of psoriatic arthritis disease sufferers have distal interphalangeal predominant, which involves the body’s distal interphalangeal joints (the joints at the ends of the toes and fingers). Common symptoms of this type of psoriatic arthritis disease include nail changes like spotting or pitting, or separating from the nail bed.
In spondylitis, inflammation reaches the spine and causes pain
, stiffness and difficulty moving the neck, lower back, pelvis and sacroiliac joints (the joints between the bone that supports the spine and is connected to the tailbone). This type of psoriatic arthritis disease can also affect joints in the arms, hands, legs and feet.
#5: Arthritis mutilans
Last but certainly not least, arthritis mutilans is the most severe form of psoriatic arthritis disease. While it only accounts for about 5% of all cases of the conditions, it can cause serious damage to joints in the hands and feet. In the long term, it can cause fingers and toes to become shorter and also contribute to bone loss.
Consult your doctor for further information on these five subtypes of psoriatic arthritis disease.
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