Symptoms of depression and the behaviors they cause don't occur in a vacuum. They're connected, and they feed off of each other. Do you know how to spot the signs? See more »

There are a lot of misconceptions regarding sadness and major depressive disorder (MDD). Knowing the differences, causes and treatments can lead to a better quality of life for you or someone you know. So how much do you really understand about the condition? See more »

Depression is fairly common, but catatonic depression, more commonly known as major depression with catatonic features, is unusual. Find out what defines this state of depression and how it is normally treated. See more »

While we may not think think twice about mentioning our irritable cabin fever or restless summertime blues, boredom is not a symptom of seasonal depression. Test your knowledge of the illness in our quiz. See more »

It's normal to feel sad sometimes, but what if that feeling becomes debilitating? Major depression can interfere with daily life and cause secondary health problems. See more »

Late-life depression is a growing health concern as Baby Boomers age and exhibit a higher incidence of mental health issues than previous generations. One well-known tool that screens older people for depression is the Geriatric Depression Scale (GDS), which has proven very effective in identifying people who need help. How much do you know about depression late in life? Take the quiz. See more »

Reactive depression can take over and make ordinary activities seem difficult and enjoyable ones seem meaningless. How long does this funk, or disorder, last and can anything stop it? We'll question the long and the short of it in our quiz. See more »

Everyone gets a little blue every now and then, but for people who suffer from Major Depressive Disorder, sadness is a frequent and debilitating part of life. Are adoptees more likely than others to have this illness? See more »

We've all been sad. But when you've got major depressive disorder, the symptoms last more than two weeks at a time. Recognizing its presence is the first step toward getting better. See more »

Depression is one of the most common mental health problems among adults, but not all types of depression have the same symptoms. Test what you know about catatonic depression. See more »