These initials refer to the doctor's credentials â they indicate the type of medical school the doctor attended and the licensing exam they took to become a doctor. MD stands for Doctor of Medicine, and is the most common type of degree earned by doctors who practice medicine in the United States.
Anxiety is often manifested at various times during cancer screening, diagnosis, treatment, or recurrence. For patients undergoing cancer treatment, anxiety can also heighten the expectancy of pain,[10-12] other symptoms of distress, and sleep disturbances and can be a major factor in anticipatory nausea and vomiting.
Stress that continues without relief can lead to a condition called distress, a negative stress reaction. Distress can lead to physical symptoms including headaches, upset stomach, elevated blood pressure, chest pain and problems with sleeping.hysical symptoms of stress include: 1  Low energy. 2  Headaches. 3  Upset stomach, including diarrhoea, constipation and nausea. 4  Aches, pains, and tense muscles. 5  Chest pain and rapid heartbeat.