Giant cell arteritis (GCA) is a type of vasculitis that affects the medium and large arteries in the body, particularly those in the head and neck. Polymyalgia rheumatica (PMR) is a related condition that causes widespread muscle pain and stiffness, especially in the shoulders and hips. Both conditions are more common in individuals over the age of 50 and are often seen together.
While the exact cause of GCA and PMR is unknown, they are thought to be related to immune system dysfunction. Symptoms of GCA can include headaches, scalp tenderness, jaw pain, and vision changes. If left untreated, GCA can lead to blindness or stroke. PMR symptoms include pain and stiffness in the shoulders, hips, neck, and lower back. Both conditions can be diagnosed through blood tests and/or imaging studies.
Treatment for GCA typically involves high-dose corticosteroids to reduce inflammation and prevent complications. PMR is also treated with corticosteroids, but at a lower dose. In most cases, symptoms of both conditions improve with treatment, but long-term steroid use can lead to a variety of side effects, including osteoporosis, weight gain, and increased risk of infection.
In conclusion, GCA and PMR are related conditions that are more common in older adults. They can be serious if left untreated, but with proper diagnosis and treatment, many individuals with GCA and PMR are able to manage their symptoms and maintain a good quality of life.