What should you know about dairy and psoriatic arthritis?

Psoriatic arthritis is an inflammatory condition affecting joints and sometimes areas where tendons attach. Dairy foods vary widely: plain yoghurt, milk, and cheese provide different amounts of protein and other nutrients, while sweetened products may add more sugar. Some people notice digestive or symptom changes after a particular food, but that experience does not prove dairy caused joint inflammation. Joint pain, swelling, and morning stiffness should be considered alongside skin symptoms and examination findings.

Keep a simple food and symptom record if you suspect a pattern. Change one food at a time and avoid severe restriction without professional guidance. If you remove dairy, plan alternatives that provide comparable protein and calcium, taking allergies, lactose intolerance, preferences, and medicines into account. Continue the treatment plan for psoriatic arthritis; dietary changes should complement clinical care, prescribed anti-inflammatory medication, and movement work such as physiotherapy.

Arrange medical review when a swollen or painful joint persists, morning stiffness is increasing, or symptoms limit walking, gripping, sleep, or work. Seek urgent help for a hot, very swollen joint with fever, sudden major loss of movement, or severe illness. Do not delay assessment while testing an elimination diet, because active inflammation may need treatment.

Ask whether your symptoms suggest active psoriatic arthritis, how to record a food pattern, and whether a dietitian can help replace nutrients if dairy is reduced. Also ask how your current medicines, exercise plan, and bowel symptoms should affect food choices.