Psoriatic arthritis: symptoms, causes and treatment

Psoriatic arthritis is inflammation involving joints and sometimes the places where tendons or ligaments attach to bone. It is associated with psoriasis, although joint symptoms and skin symptoms do not always begin together. It can affect hands, feet, knees, the spine or the pelvis, and symptoms may change over time.

Psoriatic arthritis commonly presents with joint pain, joint swelling and morning joint stiffness. A whole finger or toe may swell, and heel pain can occur where a tendon attaches. Back or neck stiffness, nail changes and patches of scaly skin may provide useful clues. Symptoms can be uneven, affecting one side or several areas.

The condition develops when the immune system drives inflammation in joint and connective tissues. The precise reason is not fully known. Inherited susceptibility, immune regulation and environmental influences may all contribute. Having psoriasis increases the context in which joint symptoms are assessed, but not every person with psoriasis develops arthritis.

Psoriatic arthritis may alternate between active periods and quieter intervals, or remain persistently active. Different joints can become involved at different times. Without adequate control, inflammation may restrict movement and damage joint structures. Early assessment helps a clinician choose treatment before loss of function becomes established.

A personal or family history of psoriasis is a significant clue. Family history of psoriatic arthritis or other immune-mediated illness may also matter. Nail psoriasis, extensive skin involvement and persistent tendon-area pain can make joint assessment particularly relevant. Smoking, excess body weight and other health factors may influence inflammatory burden and treatment planning.

There is no single test that confirms psoriatic arthritis. Assessment combines a joint and skin examination with your symptom history, family history and tests that help exclude other inflammatory arthritis. Imaging can show inflammation or structural change. Mention nail changes, swollen digits, heel pain and the timing of morning stiffness, even if skin symptoms are mild.

Treatment is tailored to the joints involved, skin disease, inflammation and daily function. Anti-inflammatory medication may help relieve pain and swelling when appropriate. Physiotherapy can preserve movement, build supporting strength and adapt activity to the affected joints. Some people need additional specialist medicines that target immune inflammation; a rheumatology clinician guides this decision and monitoring.

Balance activity with recovery rather than avoiding movement completely. Gentle mobility after waking, pacing during demanding tasks and supportive footwear can reduce strain. Keep track of swollen joints, skin changes, stiffness and fatigue. Share changes early, because treatment may need adjustment when function or symptoms shift.

Persistent inflammation can reduce joint movement, weaken hand function or damage joint surfaces. Pain and fatigue may also affect sleep, work and mood. New eye pain, light sensitivity or blurred vision needs urgent medical attention because inflammatory eye problems can accompany immune-mediated disease.

Psoriatic arthritis cannot always be prevented, but early review of persistent swelling or stiffness can reduce delays in care. Follow the agreed treatment plan, stay active within comfortable limits and address smoking, sleep and other modifiable health factors with your clinician.

Ask for rheumatology assessment when joint swelling, morning stiffness or tendon pain persists, particularly with psoriasis or nail changes. A physiotherapist can help when stiffness or weakness limits movement. Seek urgent care for a suddenly very hot joint with fever or for new painful visual symptoms.