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.
Antidepressant. A drug used to treat depression. Selective serotonin reuptake inhibitors (SSRIs) are a class of antidepressants that includes drugs like Celexa (citalopram), Lexapro (escitalopram), Paxil (paroxetine), Prozac (fluoxetine), and Zoloft (sertraline.)
Anxiety disorder. A chronic condition that causes anxiety so severe it interferes with your life. Some people with depression also have overlapping anxiety disorders.
Bipolar disorder. A type of depression that causes...