Health Information Library

Damage to a nerve.

The persistent feeling of observing oneself from outside one’s body or having a sense that one’s surroundings aren't real.

Blood or bleeding under the skin due to trauma of any kind; typically black and blue at first, with color changes as healing progresses.

Slowed or reduced muscle movement.

Physical discomfort in the jaw.

A type of behavior intending to cause physical or mental harm.

Inflamed, irritated gums that bleed easily.

Frightening dreams, usually during REM sleep, that are normal and common in children under 10 and can also affect teens and adults.

Feeling indifferent or lacking emotion, often a sign of depression or misuse of alcohol or drugs.

The state of feeling disinterested in one's surroundings, having nothing to do, or feeling that life is dull.

Thoughts, urges, or behaviors that persist despite negatively affecting health, job, or relationships.

Episodes of screaming, intense fear, and flailing while still asleep, often paired with sleepwalking.

A potentially serious sleep disorder in which breathing repeatedly stops and starts.

A high-pitched whistling sound made while breathing.

Excessive sleepiness or drowsiness.

Difficulty speaking or using words properly.

An obsession with sexual thoughts, urges, or behaviors that may cause distress or that negatively affects health, job, or relationships.

A painful sensation in any part of the head, ranging from sharp to dull, that may occur with other symptoms.

Intense, excessive, and persistent worry and fear about everyday situations. Fast heart rate, rapid breathing, sweating, and feeling tired may occur.

Feeling down or unhappy in response to grief, discouragement, or disappointment; if ongoing, may indicate depression.