You said your child is sometimes sad or irritable. His/her sadness lasts anywhere from a few days up to 2 weeks in a row. You said these problems may have been happening as often as once a month for one year or longer. They may have only happened once, but were pretty bad.
In addition to feeling sad, you said your child has had some of these other problems:
Your child's sadness may be causing big problems for him/her at home or preschool/school. For example, s/he may keep to him/herself too much or not want to do things with other children. S/he may be having problems getting along with you or other adults. Children who have these problems often have something called a Depressive Disorder. These types of problems are commonly referred to as "depression".
Depression is pretty common in children. Children under a lot of stress have a higher chance of getting depressed. Children who have been depressed more than once may get depressed again. Depression tends to run in families.
Adapted in part from the American Academy of Child and Adolescent Psychiatry (AACAP)
Facts for Families© series (1997) and the American Academy of Pediatrics (AAP) Diagnostic
and Statistical Manual for Primary Care (DSM-PC) (1996)