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Atypical depression vs. depression

What is Atypical Depression and why might it be clinically important to differentiate with "Typical" Depression?

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The DSM-IV-TR (2000) describes the term atypical [in relation to mood disorders] as a specifier that can be applied to the current Major Depressive Episode and to the current Major Depressive Episode in Bipolar I or Bipolar II disorder (p. 420). Despite the use of the specifier of atypical, the term has a rich history in previous versions of DSM manuals and is known to have "historical" significance (420) and does not connote an uncommon or unusual clinical presentation as the terms can imply (420). The most essential features of a person with atypical features would include mood reactivity, and the presence of at least two of the following symptoms:

1. increased appetite or weight gain
2. hypersomnia
3. leaden paralysis
4. long standing pattern to extreme sensitivity to perceived interpersonal rejection

Specifically, the symptoms are ...

Solution Summary

This solution contrasts atypical depression vs. depression. References are also provided to further validate the findings.