Psoriatic arthritis (also arthritis psoriatica, arthropathic psoriasis or psoriatic arthropathy) is a type of inflammatoryarthritis that will develop in between 6 and 42% of people who have the chronic skin condition psoriasis. Psoriatic arthritis is classified as a seronegative spondyloarthropathy and therefore occurs more commonly in patients with tissue type HLA-B27.
We researched this topic for you and found the following best online resources. They are categorized into basic, advanced, and research level based on the extent of information you need. You will be taken to the respective websites by pressing on the links below.
http://www.hindawi.com/journals/jir/2011/390726/ clara de simone, giacomo caldarola, magda d'agostino, et al., “usefulness of ultrasound imaging in detecting psoriatic arthritis of fingers and toes in patients with psoriasis,” clinical and developmental immunology, vol. 2011, article id 390726, 5 pages, 2011. doi:10.1155/2011/390726