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.
SP can be a symptom of medical problems such as narcolepsy, clinical depression, migraines, obstructive sleep apnea, hypertension and anxiety disorders. When SP occurs in otherwise healthy individuals and in the absence of narcolepsy, it is referred to as isolated sleep paralysis (ISP). Sleep paralysis is a fairly common sleep problem across the globe with an estimated prevalence of 5-40%. 2  It is usually accompanied by hallucinations. 3  An inability to move or speak is an essential feature. 4  Sleep paralysis can be associated with panic disorder.