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.
There are many causes of depression. Having the diagnosis of a chronic disease, like HIV infection or AIDS, can make depressive symptoms worse. Some medications used to treat HIV can cause or worsen depression, especially efavirenz (Sustiva). Diseases such as anemia or diabetes can cause symptoms that look like depression. So can drug use, or low levels of testosterone, vitamin B6, or vitamin B12.