
A note of caution: The DSM IV is the manual that defines criteria for different diagnoses. The information here is intended to inform you about just a few broad categories, and perhaps to help you understand the diagnosis of a loved one, but it is not comprehensive or complete. The information here is not sufficient to diagnose yourself or anyone else.
The DSM Classification system of mental disorders reflects a consensus of current formulations of evolving knowledge in the field of psychology. These descriptions enable clinicians to research and discuss, treat and study people with various mental health symptoms.
It is important to remember that symptoms that appear to be psychological could have a biological basis.

There is a good deal of overlap among the different diagnoses listed in the DSM IV. As with any medical diagnosis, rarely can a diagnosis be made without a pattern or cluster of symptoms.

DEPRESSION:

Treatment: Extensive research supports the use of talk therapy in the treatment of Depression. Many studies have validated the concurrent use of medications and therapy for a recovery with minimal relapses. In most cases, this is more effective than medication alone.
ANXIETY:


By definition, PTSD is an anxiety disorder. It may develop after a single or multiple traumatic events which cause intense fear, horror, and/or feelings of helplessness. Typically the symptoms develop shortly after the event, but sometimes symptoms develop months or years later. While stress reactions are common, symptoms lasting at least a month could signal the possibility of PTSD.
Vets who returned from World War II with symptoms such as these were described as “shell-shocked.” We now describe the collection of symptoms as PTSD.
Symptoms include re-experiencing the trauma through nightmares, obsessive thoughts, and flashbacks (feeling as if you are actually in the traumatic situation again). There is an avoidance component as well, where the individual avoids situations, people, and/or objects which remind him or her about the traumatic event (e.g., a person experiencing PTSD after a serious car accident might avoid driving or being a passenger in a car). Other avoidance symptoms might lead to “numbing the pain” with alcohol, drugs, or other behaviors that may become problematic. Finally, there is increased anxiety in general, possibly with a heightened startle response (e.g., very jumpy, easily startled).
Treatment: Psychological treatment, including the use of EMDR, is considered the most effective means to recovery from PTSD, although some medications (such as anti-anxiety meds) can help alleviate some symptoms during the treatment process.

OCD is another anxiety disorder. Both biological and psychological causes have been found in OCD.
Symptoms: The key features of this disorder include obsessions (persistent, often irrational, and seemingly uncontrollable thoughts) and compulsions (actions which are used to neutralize the obsessions).
A good example of this would be an individual who has persistent, uncontrollable thoughts that he is dirty, infected, or otherwise unclean. In order to feel better, he washes his hands numerous times throughout the day, gaining temporary relief from the thoughts each time.
For these behaviors to constitute OCD, it must be disruptive to everyday functioning (such as compulsive checking before leaving the house making you extremely late for all or most appointments, washing to the point of excessive irritation of your skin, or inability to perform everyday functions like work or school because of the obsessions or compulsions).
Treatment: Medication may be prescribed for individuals with OCD. Psychotherapy (Cognitive Behavioral Therapy or “CBT”) can be helpful in learning ways to feel more in control, cope better with stressors, and explore the underlying issues associated with the obsessive thoughts.
ADJUSTMENT DISORDER:

Treatment: Talk therapy with the assistance and guidance of a trained psychologist will often provide the opportunity and pathway to change. Therapy may be short-term, often only a few sessions.