Richard is 67 years old. His family does not allow him to go anywhere alone because he often forgets his name, address, and the way home. In addition, Richard is unable to follow instructions and do simple chores. Which of the following diseases does Richard most likely have?

A) Alzheimer's disease
B) Addison's disease
C) Crohn's disease
D) Still's disease

Alzheimer's Disease

A progressive neurodegenerative disorder characterized by cognitive decline, memory loss, and changes in personality, ultimately leading to severe impairment.

Crohn's Disease

A chronic inflammatory bowel disease that affects the lining of the digestive tract, causing pain, diarrhea, and weight loss.

Still's Disease

A rare inflammatory arthritis characterized by high fevers, rash, and joint pain, affecting both children (as systemic onset juvenile idiopathic arthritis) and adults.