What proportion of patients with psoriasis develop arthritis?
A 70-year-old female with psoriasis presents with a four-month history of worsening arthralgia. She mentions she has pain and stiffness in her big toes and most of her fingers.
On examination, a telescoping finger deformity is seen on her right second digit.
What proportion of patients with psoriasis develop accompanying arthritis?
You can check your answer under the image.
Answer: Around 25% of patients with psoriasis may develop psoriatic arthritis. The exact proportion is hard to know because up to one-third of patients