One minute your teenage daughter is having a relaxed, happy conversation with her friend on the phone. The next, she stumbles over an algebra problem and is -- instantly -- as angry as you've seen her ...

It's not your imagination. Bosses can display inexplicable, hair-trigger mood swings without warning, similar to teething toddlers. They start out the morning as giddy charmers, then morph into raging ...

While it’s normal for the challenges of daily life to cause occasional changes in your mood, sometimes there may be a more serious underlying cause. “It can be hard to tell what normal fluctuations in ...

Migraine attacks can cause or involve symptoms other than a headache, including mood swings. If rapid shifts in emotion are severe or persistent, they might be a sign of an underlying mood disorder, ...

Perimenopause is defined as the time “around menopause” and essentially means the few years in the run-up to menopause. On average, perimenopause lasts for four years, but some women experience ...