Holden`s madman days around Christmas.

I decided, that Holden had a depression that Christmas days , so I`ve found a little about it in Web.

Depression is a state of low mood and aversion to activity that can affect a person's thoughts, behavior, feelings and physical well-being.

Additional symptoms:
  • Pessimism;
  • Feelings of guilt, worthlessness, anxiety, and (or) fear;
  • Low self-esteem;
  • Inability to concentrate and make decisions;
  • Thoughts of death and (or) suicide;
  • Unstable appetite, marked reduction or weight gain;
  • Disturbed sleep, insomnia or oversleeping presence;

    Depression in children is less common than in adults. Symptoms in children include: 
  • Loss of appetite;
  • Sleep problems (nightmares);
  • Problems with the estimates in the school, which had not been observed;
  • Problems with the nature: alienation, cheat or aggressiveness.

Depressed people may lose interest in activities that once were pleasurable, or suffer cognitive impairments (e.g., difficulty concentrating, remembering details, making decisions). They may contemplate or attempt suicide. Their weight may change dramatically. Insomnia, excessive sleeping, change in sleep patterns (e.g., waking in the middle of the night or early in the morning and being unable to fall asleep again), fatigue, loss of energy, and aches, pains or digestive problems that are resistant to treatment may be present.
Depressed mood is a normal reaction to certain life events(In Holden's case it`s Allie's death)
a symptom of many medical conditions (e.g., Addison's disease, hypothyroidism), and a feature of certain psychiatric syndromes.

Life events.
Depression from life events can cause a dangerous feedback loop, and thus a self-fulfilling prophecy, where sad memories come to mind and cause deeper depression, all the while hurting the patient's abilities to problem solve and take initiative. A depressive mood from life events is a main focus of the field of positive psychology.

Assessment
A full patient medical history, physical assessment, and thorough evaluation of symptoms helps determine the cause of the depression. Standardized questionnaires can be helpful such as the Hamilton Rating Scale for Depression, and the Beck Depression Inventory.

Treatment
What will work to treat a person's depression depends on the cause. This means there are a wide variety of possible solutions, and it can be exceptionally difficult for doctors, psychiatrists and psychologists to know which one is needed. All of this is only harder for non-professionals, and so depressed individuals are advised to talk to professionals.