A 68 years old lady thinks that she has done a sin, she is not worth to live this world, she is also having anorexia and insomnia, she is suffering from -

Diagnostic criteria for Major depression Five or more of the following symptoms for at least 2 weeks. Depressed mood Loss of interest or pleasure in all      Decreased or increased appetite Insomnia or hypersomnia Psychomotor retardation or agitation Fatigue or loss of energy Feeling of worthlessness or excessive guilt Diminished concentration Suicidal thoughts or attempts Diagnosis of Minor depression If less than five but more than two (i.e. 2-4) of the above symptoms are present for at least 2 weeks then the diagnosis is minor depression. Coming to question This patient has:- i) Excessive guilt (she has done a sin) ii) Suicidal thoughts (not worth to live this world)                 iii) Anorexia (decreased appetite)                 iv) Insomnia So, this patient has less than 5 symptoms but more than 2 symptoms but more than 2 symptoms Diagnosis is minor depression. Now the question arises, which type of depression is it? Endogenous depression :- No external precipitating event or stressors. Reactive (neurotic/exogenous) :- Precipitated by external events or stressors, e.g. loss of a loved one, failure in love etc. As no external precipitating factor has been mentioned in the question, this patient is having endogenous depression. So, the final diagnosis is endogenous minor depression. (If the symptoms would have been 5 or more --> endogenous major depression).