What muscles are affected by trichinosis?

Trichinosis, caused by the Trichinella roundworm, primarily affects skeletal muscles, particularly those involved in voluntary movement. The larvae of Trichinella encyst within muscle fibers, leading to inflammation and damage to the muscle tissue. The most commonly affected muscles include:

1. Diaphragm: The diaphragm is a large muscle located at the base of the lungs that helps with breathing. Trichinosis can cause inflammation and weakness of the diaphragm, leading to difficulty breathing and shortness of breath.

2. Intercostal Muscles: The intercostal muscles are located between the ribs and assist in expanding the chest during breathing. Trichinosis can affect these muscles, causing chest pain and discomfort.

3. Muscles of the Eyes: The small muscles surrounding the eyes can also be affected by trichinosis. This may lead to eye pain, inflammation, and blurred vision.

4. Muscles of Mastication: The muscles involved in chewing, such as the masseter and temporalis muscles, may also be affected by trichinosis, causing jaw pain and difficulty chewing.

5. Muscles of the Limbs: Trichinosis can also affect the muscles of the arms and legs, leading to muscle pain, weakness, and difficulty with movement.

It's important to note that while trichinosis primarily affects skeletal muscles, it can also affect other tissues and organs, including the heart, lungs, and intestines. The severity of the symptoms and the muscles affected can vary depending on the intensity of the infection and the individual's immune response.