A condition characterized by repeated episodes of hypopnea (underbreathing) and apnea (not breathing) during sleep. A significant proportion of adults are thought to experience sleep-disordered breathing.
Sleep-disordered breathing can cause temporary elevations in blood pressure in association with lowered blood oxygen levels and may cause elevated blood pressure during the daytime and, in time, sustained high blood pressure.
- Sleeping disease
A neurological disorder marked by a sudden recurrent uncontrollable compulsion to sleep. Also known as narcolepsy. The disorder is often associated with cataplexy (a sudden loss of muscle tone and paralysis of voluntary muscles associated with a strong emotion), sleep paralysis (immobility of the body that occurs in the transition from sleep to wakefulness), what […]
Ensure that the sleepwalker is in a safe room for walking and cannot accidentally fall through an open window or down stairs. Some types of sleepwalking are related to seizure disorders, bipolar disorders, and other neurological conditions, but most cases are transitory and due to unknown causes. Also known as somnambulism.
- Sliding hiatal hernia
Hiatal hernias are categorized as being either sliding or para-esophageal. Sliding hiatal hernias are those in which the junction of the esophagus and stomach, referred to as the gastro- esophageal junction, and part of the stomach protrude into the chest. The junction may reside permanently in the chest, but often it juts into the chest […]
- Slipped disc
Rupturing of the tissue that separates the vertebral bones of the spinal column. The center of the disc, which is called the nucleus, is soft, springy and receives the shock of standing, walking, running, etc. The outer ring of the disc, which is called the annulus (Latin for ring), provides structure and strength to the […]
- Slow virus
A virus that has a long incubation period before the onset of a very gradual progressive disease. Typically, the diseases caused by slow viruses affect the central nervous system and are associated with a variety of nervous system symptoms while having a characteristically protracted, progressive clinical course.