Depression is more than just having a few days of sadness or irritability.
Most people have bouts of sadness from time to time, but when you're depressed, your sadness lasts longer—weeks or months—rather than just a few days.
Some individuals believe that depression is unimportant and not a true medical disease. They are mistaken; it is a genuine illness with genuine symptoms. Depression cannot be "snapped out of" or overcome by "getting yourself together."
The good news is that most people with depression can fully recover with the correct care and assistance.