Depression is categorized as a psychological disorder, and that’s a reasonable classification. Depression often manifests in a person’s thinking. A depressed person will have a different perspective, a generally more pessimistic perspective, when considering life circumstances than a non-depressed person will. Depression, however, doesn’t begin and end with a person’s thinking.
Interestingly enough, most of the symptoms of depression present in physical ways, not psychologically. Some of the more common symptoms of depression include excessive sleep patterns or sleeping too little, weight gain or weight loss, lack of energy, emotional outbreaks, and other symptoms as well. Considering this symptom list, being overly emotional is the only symptom that might be seen as mostly psychological in nature, but even that presents in a physical way through crying or hostility or whatever.
The labeling of depression as a psychological problem, a problem of the mind, equates it with mental instability or weakness in the minds of some. Men in particular seem to be especially sensitive to being labeled with some form of mental or emotional disorder. On its face this type of resistance may not seem overly problematic, but it can become quite a serious issue.
Being reluctant to admit to even the possibility of being depressed is probably also going to lead to treatment reluctance as well. Depression has been known to clear independent of any treatment. This may be especially true in the case of a one time meaningful loss, the end of a relationship for example, or a death. But bouts of depression that aren’t triggered by a significant incident, or depression brought on by a heavily traumatic event, can become chronic depression. Chronic depression most always needs intervention, and without intervention can lead to a person becoming severely distraught and even suicidal.
Giving adequate consideration to depression’s physical nature can reduce the stigma of having, or possibly having, depression. This may be the reason that depression is sometimes attributed to a chemical imbalance in the brain. While some clinicians don’t like this description, there’s significant evidence that the brains of depressives do have a different make up than the brains of people who aren’t depressed. In other words, the brain is changed when depression sets in. This knowledge is what has sparked the development of a host of depression treatment drugs over the last twenty years or so, each designed to “fix”, in its own way, the depressed brain.
So depression changes the brain, and could even be said to imbalance the brain. The makeup of the brain being somehow changed would seem to define a problem that’s physical in nature, so depression may be a mostly physical condition after all.