Aisha is an elderly patient who has been diagnosed with ankylosing spondylitis. Breaking down these terms, from what does Aisha suffer?

Aisha suffers from ankylosing spondylitis.

Explanation:

Ankylosing spondylitis is a chronic inflammatory disease that primarily affects the spine. It causes inflammation of the joints between the vertebrae, leading to pain, stiffness, and eventually fusion of the vertebrae. This condition can also affect other parts of the body, such as the hips, shoulders, and knees. Ankylosing spondylitis is more common in young adults but can also occur in elderly patients like Aisha.