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| | Psoriatic Arthritis |
 | | Psoriatic arthritis is a form of arthritis associated with psoriasis, a chronic skin and nail disease characterized by red, scaly rashes and thick, pitted fingernails. |
 | | However, psoriatic arthritis tends to affect fewer joints than rheumatoid arthritis and does not produce the typical rheumatoid arthritis antibodies. |
 | | Although the cause of psoriatic arthritis is unknown, factors such as immunity, genetics, and the environment may play a role. |
| www.healthsystem.virginia.edu /UVAHealth/adult_arthritis/psoria.cfm (407 words) |
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