Health Information Library

A dysfunction of the nerves that regulate nonvoluntary body functions, such as heart rate, blood pressure, and sweating.

Involuntary trembling of the body caused by muscle contractions.

Decreased muscle strength.

Fainting caused by an overreaction to certain triggers.

Fear of the color red, often accompanied by fear of blood or blushing.

An extreme, unrealistic feeling of physical and emotional well-being, feeling "high."

A pool of blood between the brain and its outermost covering.

Uncontrolled jerking, loss of consciousness, blank stares, or other symptoms caused by abnormal electrical activity in the brain.

A compulsive, repetitive sound or movement that’s often difficult to control.

Grinding, clenching, or gnashing of the teeth.

A form of low blood pressure that happens when standing up from sitting or lying down.

A sudden, involuntary muscle jerk, shake, or spasm.

A sudden episode of intense fear that triggers severe physical reactions when there is no real danger or apparent cause.

Kratom is promoted as an aid in overcoming withdrawal from opioid medications, but research suggests that it leads to more health problems than it solves.

Users claim kratom lifts mood and boosts energy, but there are many safety issues and questions about whether it works. Learn more before trying it.

A narrowing of the large blood vessel (aorta) that leads from the heart.

A serious gum infection that damages gums and can destroy the jawbone.