Depression characterized by improved mood in response to positive events
Medical condition
Atypical depression
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Other names
| Depression with atypical features
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![](//upload.wikimedia.org/wikipedia/commons/thumb/4/4b/Atypical_depression_diagram.png/220px-Atypical_depression_diagram.png) |
Depression subtypes
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Specialty
| Psychiatry
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Symptoms
| Low mood, mood reactivity, hyperphagia, hypersomnia, leaden paralysis, interpersonal rejection sensitivity
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Complications
| risk of self harm
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Usual onset
| Typically adolescence
[1]
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Types
| Primary anxious, primarily vegetative
[1]
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Risk factors
| Bipolar disorder, anxiety disorder, female sex
[2]
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Differential diagnosis
| Melancholic depression, anxiety disorder, bipolar disorder
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Frequency
| 15-29% of depressed patients
[3]
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Atypical depression
is defined in the
DSM
-IV
as
depression
that shares many of the typical symptoms of
major depressive disorder
or
dysthymia
but is characterized by improved mood in response to positive events. In contrast to those with atypical depression, people with
melancholic depression
generally do not experience an improved mood in response to normally pleasurable events. Atypical depression also often features significant weight gain or an increased appetite,
hypersomnia
, a heavy sensation in the limbs, and
interpersonal rejection sensitivity
that results in significant social or occupational impairment.
[4]
Despite its name, "atypical" depression does not mean it is uncommon or unusual.
[5]
The reason for its name is twofold: it was identified with its "unique" symptoms subsequent to the identification of melancholic depression and its responses to the two different classes of antidepressants that were available at the time were different from melancholic depression (i.e.,
MAOIs
had clinically significant benefits for atypical depression, while
tricyclics
did not).
[6]
Atypical depression is four times more common in females than in males.
[7]
Individuals with features of atypical depression tend to report an earlier age of onset (e.g. while in high school) of their depressive episodes. These episodes tend to be more chronic than those of major depressive disorder
[2]
and only have partial remission between episodes. Younger individuals may be more likely to have atypical features, whereas older individuals may more often have episodes with melancholic features.
[4]
Atypical depression has high comorbidity with anxiety disorders, carries more risk of suicidal behavior, and has distinct personality psychopathology and biological traits.
[2]
Atypical depression is more common in individuals with
bipolar I
,
[2]
bipolar II
,
[2]
[8]
cyclothymia
[2]
or
seasonal affective disorder
.
[4]
Depressive episodes in bipolar disorder tend to have atypical features,
[2]
as does depression with seasonal patterns.
[9]
Pathophysiology
[
edit
]
Significant overlap between atypical and other forms of depression has been observed, though studies suggest that there are differentiating factors within the various pathophysiological models of depression. In the
endocrine model
, evidence suggests the
HPA axis
is hyperactive in
melancholic depression
, and hypoactive in atypical depression. Atypical depression can be differentiated from melancholic depression via verbal fluency tests and psychomotor speed tests. Although both show impairment in several areas such as
visuospatial
memory and verbal fluency, melancholic patients tend to show more impairment than atypical depressed patients.
[10]
Furthermore, regarding the
inflammatory theory of depression
, inflammatory blood markers (cytokines) appear to be more elevated in atypical depression when compared to non-atypical depression.
[11]
Diagnosis
[
edit
]
The diagnosis of atypical depression is based on the criteria stated in the
Diagnostic and Statistical Manual of Mental Disorders
(
DSM-5
). The
DSM-5
defines atypical depression as a subtype of
major depressive disorder
that presents with "atypical features", characterized by:
- Mood reactivity (i.e., mood brightens in response to actual or potential positive events)
- At least two of the following:
- Significant weight gain or increase in appetite (hyperphagia);
- Hypersomnia (sleeping too much, as opposed to the insomnia present in melancholic depression);
- Leaden paralysis (i.e., heavy feeling resulting in difficulty moving the arms or legs);
- Long-standing pattern of
interpersonal rejection sensitivity
(not limited to episodes of mood disturbance) that results in significant social or occupational impairment.
Criteria for depression with
melancholic features
or
catatonic features
must not be met during the same episode.
Treatment
[
edit
]
Due to the differences in clinical presentation between atypical depression and
melancholic depression
, studies were conducted in the 1980s and 1990s to assess the therapeutic responsiveness of the available
antidepressant
pharmacotherapy in this subset of patients.
[12]
Currently, antidepressants such as
SSRIs
,
SNRIs
,
NRIs
, and
mirtazapine
are considered the best medications to treat atypical depression due to efficacy and fewer side effects than previous treatments.
[13]
Bupropion, a norepinephrine reuptake inhibitor, may be uniquely suited to treat the atypical depression symptoms of lethargy and increased appetite in adults.
[13]
Modafinil
is sometimes used successfully as an off-label treatment option.
[14]
Before the year 2000,
monoamine oxidase inhibitors
(MAOIs) were shown to be of superior efficacy compared to other antidepressants for the treatment of atypical depression, and were used as first-line treatment for this clinical presentation. This class of medication fell in popularity with the advent of the aforementioned selective agents, due to concerns of interaction with tyramine-rich foods (such as some aged cheese, certain types of wine, tap beer and fava beans) causing a hypertensive crisis
[15]
and some ? but not all ?
sympathomimetic drugs
, as well as the risk of
serotonin syndrome
when concomitantly used with serotonin reuptake agents. Despite these concerns, they are still used in treatment-resistant cases, when other options have been exhausted, and usually show greater rates of remission compared to previous pharmacotherapies. They are also generally better tolerated by many patients.
[16]
There are also newer selective and reversible MAOIs, such as
moclobemide
, which carry a much lower risk of tyramine potentiation and have fewer interactions with other drugs.
[17]
Tricyclic antidepressants
(TCAs) were also used prior to the year 2000 for atypical depression, but were not as efficacious as MAOIs, and have fallen out of favor with prescribers due to the less tolerable side effects of TCAs and more adequate therapies being available.
[12]
One pilot study suggested that
psychotherapy
such as
cognitive behavioral therapy
(CBT) may have equal efficacy to MAOIs for a subset of patients with atypical depression, although the sample size was small and statistical significance was not reached.
[18]
These are talk therapy sessions with psychiatrists or clinical psychologists to help the individual identify troubling thoughts or experiences that may affect their mental state, and develop corresponding coping mechanisms for each identified issue.
[19]
Epidemiology
[
edit
]
True
prevalence
of atypical depression is difficult to determine. Several studies conducted in patients diagnosed with a depressive disorder show that about 40% exhibit atypical symptoms, with four times more instances found in female patients.
[20]
[7]
Research also supports that atypical depression tends to have an earlier onset, with teenagers and young adults more likely to exhibit atypical depression than older patients.
[2]
Patients with atypical depression have shown to have higher rates of neglect and abuse in their childhood as well as alcohol and drug disorders in their family.
[10]
Overall,
rejection sensitivity
is the most common symptom, and due to some studies forgoing this criterion, there is concern for underestimation of prevalence.
[21]
Research
[
edit
]
Atypical depression was first thought of as a disorder separate from typical depression in 1959, when doctors E.D. West and P. J. Dally were studying the effects of iproniazid, an MAOI, on patients with depression.
[22]
They found consistencies among the patients who responded well to the drug in comparison to those who didn't. These patients, who were displaying symptoms of "anxiety hysteria with secondary depression", responded notably well to the iproniazid.
[23]
In general, atypical depression tends to cause greater functional impairment than other forms of depression. Atypical depression is a chronic syndrome that tends to begin earlier in life than other forms of depression?usually beginning in the teenage years. Similarly, patients with atypical depression are more likely to have
anxiety disorders
, (such as
generalized anxiety disorder
,
obsessive-compulsive disorder
and
social anxiety disorder
), bipolar disorder, or
personality disorders
(such as
borderline personality disorder
,
avoidant personality disorder
).
[4]
[
additional citation(s) needed
]
Recent research suggests that young people are more likely to experience
hypersomnia
while older people are more likely to experience
polyphagia
.
[24]
Medication response differs between chronic atypical depression and acute
melancholic depression
. Some studies suggest that the older class of antidepressants, monoamine oxidase inhibitors (
MAOIs
), may be more effective at treating atypical depression.
[25]
While the more modern
SSRIs
and
SNRIs
are usually quite effective in this illness, the
tricyclic antidepressants
typically are not.
[4]
The
wakefulness-promoting agent
modafinil
has shown considerable effect in combating atypical depression, maintaining this effect even after discontinuation of treatment.
[14]
Antidepressant response can often be enhanced with supplemental medications, such as
buspirone
,
bupropion
, or
aripiprazole
. Psychotherapy, whether alone or in combination with medication, is also an effective treatment in individual and group settings.
[26]
See also
[
edit
]
References
[
edit
]
- ^
a
b
Davidson JR, Miller RD, Turnbull CD, Sullivan JL (May 1982). "Atypical depression".
Archives of General Psychiatry
.
39
(5): 527?534.
doi
:
10.1001/archpsyc.1982.04290050015005
.
PMID
7092486
.
- ^
a
b
c
d
e
f
g
h
Singh T, Williams K (April 2006).
"Atypical depression"
.
Psychiatry
.
3
(4): 33?39.
PMC
2990566
.
PMID
21103169
.
- ^
Thase ME (2007). "Recognition and diagnosis of atypical depression".
The Journal of Clinical Psychiatry
.
68
(Suppl 8): 11?16.
PMID
17640153
.
- ^
a
b
c
d
e
American Psychiatric Association. (2000). Mood Disorders. In Diagnostic and Statistical Manual of Mental Disorders (4th ed., text rev.) Washington, DC: Author.
[
page needed
]
- ^
"Atypical depression"
. Mayo Clinic
. Retrieved
2013-06-23
.
- ^
Cristancho M (2012-11-20).
"Atypical Depression in the 21st Century: Diagnostic and Treatment Issues"
.
Psychiatric Times
. Psychiatric Times Vol 28 No 1.
28
(1). Archived from
the original
on 2013-12-02
. Retrieved
23 November
2013
.
- ^
a
b
Łojko D, Rybakowski JK (2017).
"Atypical depression: current perspectives"
.
Neuropsychiatric Disease and Treatment
.
13
: 2447?2456.
doi
:
10.2147/NDT.S147317
.
PMC
5614762
.
PMID
29033570
.
- ^
Perugi G, Akiskal HS, Lattanzi L, Cecconi D, Mastrocinque C, Patronelli A, et al. (1998). "The high prevalence of "soft" bipolar (II) features in atypical depression".
Comprehensive Psychiatry
.
39
(2): 63?71.
doi
:
10.1016/S0010-440X(98)90080-3
.
PMID
9515190
.
- ^
Juruena MF, Cleare AJ (May 2007).
"[Overlap between atypical depression, seasonal affective disorder and chronic fatigue syndrome]"
[Overlap between atypical depression, seasonal affective disorder and chronic fatigue syndrome].
Revista Brasileira de Psiquiatria
(in Portuguese).
29
(Suppl 1): S19?S26.
doi
:
10.1590/S1516-44462007000500005
.
PMID
17546343
.
- ^
a
b
Bosaipo NB, Foss MP, Young AH, Juruena MF (February 2017). "Neuropsychological changes in melancholic and atypical depression: A systematic review".
Neuroscience and Biobehavioral Reviews
.
73
: 309?325.
doi
:
10.1016/j.neubiorev.2016.12.014
.
PMID
28027956
.
S2CID
3983515
.
- ^
Łojko D, Rybakowski JK (2017).
"Atypical depression: current perspectives"
.
Neuropsychiatric Disease and Treatment
.
13
: 2447?2456.
doi
:
10.2147/NDT.S147317
.
PMC
5614762
.
PMID
29033570
.
- ^
a
b
Stewart JW, Thase ME (April 2007). "Treating DSM-IV depression with atypical features".
The Journal of Clinical Psychiatry
.
68
(4): e10.
doi
:
10.4088/jcp.0407e10
.
PMID
17474800
.
- ^
a
b
"Clinical Practice Review for Major Depressive Disorder | Anxiety and Depression Association of America, ADAA"
.
adaa.org
. Retrieved
2019-11-22
.
- ^
a
b
Vaishnavi S, Gadde K, Alamy S, Zhang W, Connor K, Davidson JR (August 2006). "Modafinil for atypical depression: effects of open-label and double-blind discontinuation treatment".
Journal of Clinical Psychopharmacology
.
26
(4): 373?378.
doi
:
10.1097/01.jcp.0000227700.263.75.39
.
PMID
16855454
.
S2CID
19370803
.
- ^
Burns C, Kidgron A (2021). "Biochemistry, Tyramine".
StatPearls
. Treasure Island (FL): StatPearls Publishing.
PMID
33085344
.
- ^
Grady MM, Stahl SM (March 2012). "Practical guide for prescribing MAOIs: debunking myths and removing barriers".
CNS Spectrums
.
17
(1): 2?10.
doi
:
10.1017/S109285291200003X
.
PMID
22790112
.
S2CID
206312008
.
- ^
Nair NP, Ahmed SK, Kin NM (November 1993).
"Biochemistry and pharmacology of reversible inhibitors of MAO-A agents: focus on moclobemide"
.
Journal of Psychiatry & Neuroscience
.
18
(5): 214?225.
PMC
1188542
.
PMID
7905288
.
- ^
Mercier MA, Stewart JW, Quitkin FM (May 1992). "A pilot sequential study of cognitive therapy and pharmacotherapy of atypical depression".
The Journal of Clinical Psychiatry
.
53
(5): 166?170.
PMID
1592844
.
- ^
"What is Psychotherapy?"
.
www.psychiatry.org
. Retrieved
2019-11-21
.
- ^
Bienvenue A, Vidal M, Sainte-Marie J, Philippot J (July 1985). "Kinetics of phospholipid transfer between liposomes (neutral or negatively charged) and high-density lipoproteins: a spin-label study of early events".
Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism
.
835
(3): 557?66.
doi
:
10.1016/0005-2760(85)90125-0
.
PMID
2990566
.
- ^
Quitkin FM (June 2002).
"Depression With Atypical Features: Diagnostic Validity, Prevalence, and Treatment"
.
Primary Care Companion to the Journal of Clinical Psychiatry
.
4
(3): 94?99.
doi
:
10.4088/pcc.v04n0302
.
PMC
181236
.
PMID
15014736
.
- ^
Pae CU, Tharwani H, Marks DM, Masand PS, Patkar AA (December 2009). "Atypical depression: a comprehensive review".
CNS Drugs
.
23
(12): 1023?1037.
doi
:
10.2165/11310990-000000000-00000
.
PMID
19958040
.
S2CID
40284568
.
- ^
West ED, Dally PJ (June 1959).
"Effects of iproniazid in depressive syndromes"
.
British Medical Journal
.
1
(5136): 1491?1494.
doi
:
10.1136/bmj.1.5136.1491
.
PMC
1993720
.
PMID
13651775
.
- ^
Posternak MA, Zimmerman M (November 2001). "Symptoms of atypical depression".
Psychiatry Research
.
104
(2): 175?181.
doi
:
10.1016/S0165-1781(01)00301-8
.
PMID
11711170
.
S2CID
11514430
.
- ^
"Atypical depression - Symptoms and Causes"
. Mayo Clinic
. Retrieved
18 March
2020
.
- ^
Hunsley J, Elliott K, Therrien Z (August 2014). "The efficacy and effectiveness of psychological treatments for mood, anxiety, and related disorders".
Canadian Psychology
.
55
(3): 161?176.
doi
:
10.1037/a0036933
.
External links
[
edit
]
- Stewart JW, Quitkin FM, McGrath PJ, Klein DF (June 2005).
"Defining the boundaries of atypical depression: evidence from the HPA axis supports course of illness distinctions"
.
Journal of Affective Disorders
.
86
(2?3): 161?167.
doi
:
10.1016/j.jad.2005.01.009
.
PMID
15935235
.
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