Mood disorders (Ch 4) Flashcards
Mood
one’s internal emotional state
external and internal stimuli can trigger moods
Normal to have wide range of moods and to have sense of control over one’s mood
Mood episode
distinct periods of time in which some abnormal mood is present.
Depression, mania, hypomania
Mood disorders
patterns of mood episodes, includes major depressive disorder (MDD), bipolar I disorder, bipolar II disorder, persistent depressive disorder, and cyclothymic disorder
may have psychotic features (delusions or hallucinations)
Major Depressive Episode DSM5 criteria
At least 5 of the following, must have either 1 or 2, for at least 2 week period
- Depressed mood most of the time
- Anhedonia (loss of interest in pleasurable activities)
- Change in appetite or weight (up or down)
- Feelings of worthlessness or excessive guilt
- Insomnia or hypersomnie
- Diminished concentration
- Psychomotor agitation or retardation (i.e. restlessness or slowness)
- Fatigue or loss of energy
- Recurrent thoughts of death or suicide
Manic Episode DSM5 criteria
Distinct period of abnormally and persistent elevated, expansive or irritable mood, and abnormally and persistently increased goal-directed activity or energy, lasting at least 1 week
Includes at least three of the following (four if mood is only irritable):
- distractibility
- Inflated self-esteem or grandiosity
- Increase in goal-directed activity (socially, at work, or sexually) or psychomotor agitation
- decreased need for sleep
- Flight of ideas or racing thoughts
- More talkative than usual or pressured speech (rapid and uninterruptible)
- Excessive involvement in pleasurable activities that have a high risk of negative consequences (e.g. shopping sprees, sexual indiscretions)
Greater than 50 percent of manic patients have psychotic symptoms
Symptoms of Mania
"DIG FAST" Distractibility Insomnia/impulsive behavior Grandiosity Flight of ideas/racing thoughts Activity/Agitation Speech (pressured) Thoughtlessness
Symptoms of major depression
SIG E. CAPS Sleep Interest Guilt Energy Concentration Appetite Psychomotor activity Suicidal ideation
Hypomanic episode
distinct period of abnormally and persistently elevated, expansive, or irritable mood, and abnormally and persistently increased goal directed activity or energy, lasting at least 4 consecutive days, that includes at least 3 symptoms listed for manic episode criteria (four if mood is only irritable)
Major Depressive Disorder (MDD) DSM5
At least one major depressive episode
No history of manic or hypomanic episode
Episodes of depressed mood associated with loss of interest in daily activities. May not acknowledge their depressed mood or may express vague, somatic complaints (fatigue, HA, abdominal pain, muscle tension, etc)
Sleep problems associated with MDD
Multiple awakenings
Initial and terminal insomnia (hard to fall asleep, early morning awakenings)
Hypersomnia (excessive sleepiness) is less common
Rapid eye movement (REM) sleep shifted earlier in the night and for greater duration with reduced stage 3 and 4 (slow wave) sleep
Causes of MDD
decreased CSF levels of 5-HIAA (serotonin metabolite) in depressed patients with impulsive and suicidal behavior
Increased sensitivity to b-adrenergic receptors
High cortisol - hyperactive H-P-A axis, fail to suppress cortisol levels with dexamethasone suppression test
Abnormal thyroid axis
GABA, glutamate, endogenous opiates may have a role
Psychosocial/life events - multiple adverse childhood experience risk factor for later developing MDD
Genetics - first degree relatives 2-4 x more like to have MDD
Selective serotonin reuptake inhibitors (SSRIs) side effects
HA, GI disturbance, sexual dysfunction, rebound anxiety
SNRI drugs
venlafaxine (Effexor)
Duloxetine (Cymbalta)
alpha2-adrenergic receptor antagonist drug
mirtazapine (Remeron)
Dopamine-norepinephrine reuptake inhibitor drug
bupropion (Wellbutrin)
TCAs
Most lethal in overdose due to cardiac arrhythmias
Side effects: sedation, wt gain, orthostatic hypotension, anticholinergic effects
Can aggravate prolonged QTc syndrome