Right iliopsoas edema may be sacroiliac arthritis, iliopsoas strain or contusion, chronic fasciitis of iliopsoas, etc. 1. Sacroiliac arthritis: it is the early symptom of various spondyloarthropathies or undifferentiated spondyloarthropathies, pain is the main symptom, chronic onset of the disease, it is heavier at night or in the morning, and it can be alleviated after activities. It can also involve the iliopsoas muscle, manifesting as edema and pain in the right iliopsoas muscle. 2. Iliopsoas muscle strain or contusion: due to external impact or prolonged bad posture, resulting in iliopsoas muscle strain or contusion, manifested as iliopsoas muscle pain, edema, etc., the above symptoms can be aggravated by cold. 3. Chronic fasciitis of iliopsoas muscle: it is a kind of non-specific inflammation, which may be due to infection, trauma and other factors, stimulate the peripheral nerve endings, so that the local muscle spasm, pain, edema and other symptoms. If the right iliopsoas muscle edema symptoms are not relieved, or accompanied by other symptoms, you should go to the hospital in time, after the cause is clear to give targeted treatment.