Seasonal affective disorder, or SAD, is a type of
depression that occurs during the same
season each year. You may have SAD if you felt depressed during the last two winters but felt much better in
spring and summer.
"Could you be depressed and not know it?" This sounds like a ridiculous
question. After all, wouldn't you know if you were depressed? Possibly
not. Depression can take hold gradually, without a person realizing that
depressive thoughts and feelings are increasingly dominating her perspective -
and her life.
Many people assume that depression is easily identifiable, manifesting
itself as persistent sadness that doesn't lift. In fact, symptoms of depression
can take a variety of forms. Chances...