Brain and Nervous System

The central nervous system (CNS) is made up of the brain and the spinal cord. The central nervous system controls thought processes, guides movement, and registers sensations throughout the body.

Alcohol and Substance Use in PTSD

Looks at the problem of using alcohol or drugs as a way to cope with post-traumatic stress disorder (PTSD). Covers when alcohol or drug use becomes a problem. Includes a test to see if you have a problem with alcohol or drugs and steps for getting help.

Alcohol Effects on a Fetus

What effect does alcohol have on a fetus? A woman who drinks alcohol while she is pregnant may harm her developing baby (fetus). Alcohol can pass from the mother’s blood into the baby’s blood. It can damage and affect the growth of the baby’s cells. Brain and spinal cord cells are most likely to have damage. The term…

Alcohol Problems: How to Stop Drinking

You can take steps today to stop drinking. Your first step might be to see your doctor, contact a support group, or set a date in the near future to stop. While some people can stop drinking on their own, others need medical help to manage the physical process of withdrawal. If you think you have alcohol use disorder…

Alcohol Use Disorder

Is this topic for you? This topic is about alcohol use disorder in adults. For information about alcohol problems in teens or children, see the topic Teen Alcohol and Drug Use. What is alcohol use disorder? Alcohol use disorder means having unhealthy or dangerous drinking habits, such as drinking every day or drinking…

Altitude Sickness

What is altitude sickness? Altitude sickness occurs when you cannot get enough oxygen from the air at high altitudes. This causes symptoms such as a headache, loss of appetite, and trouble sleeping. It happens most often when people who are not used to high altitudes go quickly from lower altitudes to 8000 ft (2500 m)…