A nighttime, or nocturnal, panic attack is characterized by sudden waking and feelings of terror. Nocturnal panic attacks differ from night terrors because patients usually remember the attack in the morning.

Serotonin is a neurotransmitter and hormone that's found throughout the body. If you have too little serotonin, it could lead to unwelcome changes such as mood disorders, depression or digestive upset. This imbalance is called serotonin deficiency. There may not be a cure for it, but treatment is available.

Depression is a serious mental health disorder. It is a true condition that differs from occasional short periods of sadness in that it is consistent and interferes with daily functioning. This illness takes several forms including "major" depression, which is generally episodic and often recurring.

MAOI refers to a category of antidepressant drugs known as "monoamine oxidase inhibitors" that alleviate depression by stopping (inhibiting) the monoamine oxidase enzyme from metabolizing chemical messengers (neurotransmitters) within the nervous system.

Anxiety is a normal response to stress. Anxiety can be good in that it can motivate one to succeed, meet deadlines or set goals, but when anxiety becomes excessive and overwhelming, it can manifest itself in physical symptoms such as heavy chest pain.

Some babies are higher maintenance than others.While some are content to simply lie in their cribs or swings and watch the world go by, others are demanding and needy from day one.They need to be moved constantly and may seem bored with their surroundings at an early age These babies may be termed "hyperactive."

Because exercise is socially acceptable and stressed as vital, exercise addicts are much harder to diagnose than other addicts, according to Kerrie Kuntz, certified personal trainer and CEO of Fusion Fitness Inc. Determine whether you have a problem by taking an honest look at your intentions.

It may be "shocking" to learn that your body conducts electricity. Salts in your body, known as electrolytes, are ionic compounds that, in water, break down into positive and negative charges and help conduct electrical activities in your body.

Major depressive disorder and dysthymic disorder, commonly known as dysthymia, represent two mood disorders classified by the "Diagnostic and Statistical Manual" of the American Psychiatric Association.

Anxiety is a normal part of daily life. It can occur when someone is stuck in traffic, is waiting for a diagnosis in her doctor’s office or giving a speech. However, anxiety can be overwhelming and debilitating for those who have anxiety disorders.

Allergic reactions to dry cleaning solutions are uncommon, but they do occur. The most common dry cleaning solution used in the United States is perchloroethylene. According to OSHA, over 70% of dry cleaners use the dry cleaning solution perchloroethylene.

Depression is a chronic medical illness that can lead to a variety of emotional and physical problems. It is also called major depression, clinical depression or major depressive disorder.