Anxiety disorders are a type of mental health condition. Anxiety makes it difficult to get through your day. Symptoms include feelings of nervousness, panic and fear as well as sweating and a rapid heartbeat. Treatments include medications and cognitive behavioral therapy.

Depression is a serious mental illness that can interfere with a person's life. It can cause long-lasting and severe feelings of sadness, hopelessness, and a loss of interest in activities. It can also cause physical symptoms of pain, appetite changes, and sleep problems.

Insomnia is a common sleep disorder that can make it hard to fall asleep, hard to stay asleep, or cause you to wake up too early and not be able to get back to sleep. You may still feel tired when you wake up.

Bed-wetting can have causes that aren't due to underlying disease. Bed-wetting can occur up to age 5 as part of normal childhood development. In adults, it can be caused by alcohol intoxication.

The exact cause of bipolar disorder isn’t known, but a combination of genetics, environment and altered brain structure and chemistry may play a role. Manic episodes may include symptoms such as high energy, reduced need for sleep and loss of touch with reality. Depressive episodes may include symptoms such as low energy, low motivation and loss of interest in daily activities. Mood episodes last days to months at a time and may also be associated with suicidal thoughts. Treatment is usually lifelong and often involves a combination of medications and psychotherapy.

Psychosis is a condition that affects the way your brain processes information. It causes you to lose touch with reality. You might see, hear, or believe things that aren't real. Psychosis is a symptom, not an illness.

Schizophrenia is a serious mental disorder in which people interpret reality abnormally. Schizophrenia may result in some combination of hallucinations, delusions, and extremely disordered thinking and behavior that impairs daily functioning, and can be disabling. People with schizophrenia require lifelong treatment.

Compulsive behaviour can be normal, and is only an indicator of underlying disease when feelings become excessive, all-consuming and interfere with daily living.

Overview. Alzheimer's disease is a progressive neurologic disorder that causes the brain to shrink (atrophy) and brain cells to die. Alzheimer's disease is the most common cause of dementia — a continuous decline in thinking, behavioral and social skills that affects a person's ability to function independently.