Final answer:
Cushing's syndrome is characterized by a 'moon face' and abnormal weight gain, among other symptoms, and is often caused by a pituitary tumor leading to excess cortisol production.
Step-by-step explanation:
A physical feature that supports the diagnosis of Cushing's syndrome is the characteristic moon face, where there is an abnormal fat distribution that gives the face a rounded appearance. Other symptoms of Cushing's syndrome include abnormal weight gain, particularly in the neck and trunk, which is sometimes referred to as a buffalo hump. Additionally, patients may exhibit symptoms such as high blood glucose levels, obesity, slow growth, weak muscles, bone pain, and fatigue. A common cause of Cushing's syndrome is a pituitary tumor, leading to overproduction of the hormone cortisol. Treatment options for Cushing's syndrome aim at reducing excessive cortisol levels and can include surgery, radiation therapy, or medication.