In this way the teacher is showing that they want to make improvements where needed. Teachers could put up a suggestion box, and they can hand out evaluation forms at different times of the year. This shows the students that continuous improvement is important.
On this Page. Overview. Depression is a serious medical illness and an important public health issue. Depression is characterized by persistent sadness and sometimes irritability (particularly in children) and is one of the leading causes of disease or injury worldwide for both men and women.
Bipolar disorder. This is a condition in which a person has periods of depression alternating with periods of mania or elevated mood. Mood disorder related to another health condition. Many medical illnesses (including cancer, injuries, infections, and chronic illnesses) can trigger symptoms of depression.