Psoriatic arthritis joints which features

Most of the slow onset of the disease, About 1 / 3 of patients than acute onset, accompanied by fever and other systemic symptoms. A few may first have traumatic history, and then there psoriatic arthritis. As for the incidence of psoriasis and arthritis, about 2 / 3 of patients with psoriasis first by 5-10 years after arthritis, about 15% -20% of patients with arthritis first, about 10 percent of the two both incidence. Involvement refers to the disease, toe joints, metacarpophalangeal joints, such as hand-foot-metatarsophalangeal joint facet mainly, but also involved the wrist, elbow and knee joints, and other large limbs, a small number can be involved sacroiliac joints and spine. Joint involvement often asymmetrical, the most vulnerable distal interphalangeal joint involvement, early involvement hand joints common than foot joints; Apart from joint pain, swelling can be a mix, morning stiffness, so time there will be the ankylosis, and various malformations the degree of dysfunction, a small number of residual damage caused. Psoriatic arthritis according to the number of joints involved, the location and the degree of damage can be divided into the following types: (1) fewer joint or single-joint arthritis in this type of the most common, accounting for about 70 percent. Normally only 23 involved a single or joint, involving hand and foot to the distal or proximal means (toe) and the joints between the metatarsophalangeal joint common. The knee, hip, ankle, wrist can also involved. Distribution often asymmetrical. As with the tenosynovitis of, or involvement in that toe may mean a typical sausage (toe). This type of 1 / 3 to 1 / 2, patients can become relatively symmetric multi-joint type. (2) Multi-arthritis about 15 percent. Mainly involving small hands and feet joints, wrist, elbow, knee, ankle, and some patients showed symmetry Distributed. The number of violations than the joints of rheumatoid arthritis, than the degree of deformity of rheumatoid arthritis light. Some of the patient's serum rheumatoid factor positive. (3) distal refers to wait arthritis-rare. Typical psoriatic arthritis, mainly involving the distal (toe) joint, it is almost always associated with the neighboring nail psoriasis lesions. (4) Mutilating psoriatic arthritis arthritis type is the most serious type, rare. Violations of the phalanx, metacarpal or can be developed to the metatarsal bone serious discretion dissolved. Festival often refers to a "overlaying" phenomenon and the shortening deformities. Ankylosis articular lesions can occur. Accompanied fever, weight loss and serious and extensive skin lesions, and the sacroiliac arthritis. The age of onset and more patients in the 20 to 30-year-old. (5) spinal disease-20% - 40% of psoriatic arthritis patients in sacroiliac joint involvement. As to the performance of ligament Osteophyte spondylitis, can be found in 40 percent of psoriatic arthritis. Osteophyte ligament can occur without the sacroiliac arthritis, and spinal involvement of any location, can cause spinal fusion. More than five kinds of joint disease type, is not immutable, in clinical soil; evolution from one type to another type, there can be several types of joint diseases co-exist.