When preparing an informational sheet on myositis for distribution at a meeting of a lupus support group, the nurse includes the following facts concerning this disease: Select all that apply:

Question

1. Myositis contains four different forms of the disorder.
2. Onset for polymyositis (PM) is usually between the ages of 40 and 50.
3. Inclusion body myositis (IBM) is more common in females.
4. Existing autoimmune conditions are a contributing factor in its development.
5. It is a commonly seen immune disorder.

Answer 1

1. Myositis contains four different forms of the disorder.
2. Onset for polymyositis (PM) is usually between the ages of 40 and 50.
3. Inclusion body myositis (IBM) is more common in females.
4. Existing autoimmune conditions are a contributing factor in its development.

Rationale: Myositis contains four different forms of the disorder. There are four kinds of myositis: polymyositis (PM), dermatomyositis (DM), inclusion body myositis (IBM), and juvenile myositis (JM). Onset for polymyositis (PM) is usually between the ages of 40 and 50. PM can occur at any age, but affects those between the ages 40 and 50. Inclusion body myositis (IBM) is more common in females. IBM typically begins after age 50 and is more common in women than in men. Existing autoimmune conditions are a contributing factor in its development. Myositis occurs more readily with patients who have lupus. It is a commonly seen immune disorder. Myositis is an uncommon disease wherein the immune system inflames the body's own healthy muscle tissue. These conditions are usually caused by an injury, infection, or autoimmune condition.