Aging changes in the nervous system
Aging changes in the nervous system

Memory loss
Memory loss (amnesia) is unusual forgetfulness that can be caused by brain damage due to disease or injury, or it can be caused by severe emotional trauma.

Depression
Depression

Stress and anxiety
Stress and anxiety

Sleeping difficulty
Chronic and persistent difficulty in either (1) falling asleep (initial insomnia), (2) remaining asleep through the night (middle insomnia), or (3) waking up too early (terminal insomnia). All types of insomnia can lead to daytime drowsiness, poor concentration, and the inability to feel refreshed and rested in the morning.

Inhibited sexual desire
Inhibited sexual desire

Suicide and suicidal behavior
Suicide and suicidal behavior

Seasonal affective disorder
Seasonal affective disorder (SAD) is a form of depression that occurs in relation to the seasons, most commonly beginning in winter.

Grief
Grief

Depression - elderly
Depression is a medical illness characterized by persistent , , and loss of self-worth. These feelings are accompanied by reduced energy and concentration, sleep problems (insomnia), decreased appetite and weight loss. In the elderly, it also frequently presents with excessive concerns about bodily aches and pains.

Compulsive gambling
Compulsive gambling is the inability to resist impulses to gamble, leading to severe personal or social consequences.

Tremor
Tremors are a type of involuntary shaking movement.

Major depression
Major depression

Alcoholism
Alcoholism

Alzheimers disease
Alzheimers disease

Parkinsons disease
Parkinson's disease is a disorder of the brain characterized by shaking (tremor) and , movement, and coordination. The disease is associated with damage to a part of the brain that is involved with movement.

Delirium
Delirium is a condition of severe and rapid changes in brain function. It is usually caused by a treatable physical or mental illness.

Dementia
Dementia