Mrs. Dee Mark complains of fatigue, increased appetite, weight loss, and night sweats. She has protruding eyeballs (exophthalmos) and increased reflexes. These signs and symptoms are characteristic of:

diabetes or hyperthyroidism

Explanation:

Medical causes – unrelenting exhaustion may be a sign of an underlying illness, such as a thyroid disorder, heart disease or diabetes. Lifestyle-related causes – alcohol or drugs or lack of regular exercise can lead to feelings of fatigue. Workplace-related causes – workplace stress can lead to feelings of fatigue. But if your appetite is significantly increased over a prolonged period of time, it could be a symptom of a serious illness, such as diabetes or hyperthyroidism. Mental health conditions, such as depression and stress, can also lead to appetite changes and overeating.