Many people know when they are depressed. However, some people do not realise when they are depressed. They may know that they are not right and are not functioning well, but don't know why. Some people think that they have a physical illness - for example, if they lose weight.
There is a set of symptoms that are associated with depression and help to clarify the diagnosis. These are:
Symptoms of Depression
A significantly depressed mood or general absence of expressions.
Inability to experience pleasure or feel interest in daily activities.
Inexplicable crying spells, sadness, and/or irritability.
Sleeplessness or excessive sleep nearly every day. A substantial change in appetite,
eating patterns or weight.
Constant feeling of fatigue or energy loss.
Diminished ability to concentrate.
Feelings of hopelessness or worthlessness.
Inappropriate feelings of guilt.
Lack of sexual desire.
With depression, it is common to develop physical symptoms such as headaches, palpitations, chest pains, and general aches. Some people consult a doctor at first because they have a physical symptom such as chest pains. They are concerned that they may have a physical problem such as a heart condition when it is actually due to depression. Depression is in fact quite a common cause of physical symptoms. But, the opposite is also true. That is, people with serious physical conditions are more likely to develop depression.