Behav. Sci. 5. Flashcards
major depressive disorder definition by DSM-V
5+ of 9 symptoms present during the same 2-week period and represent a change from previous functioning - 1. depressed mood most of the day 2. diminished interest 3. weight loss or weight gain 4. insomnia or hypersomnia 5. psychomotor agitation or retardation 6. fatigue 7. feelings of worthlessness, excessive or inappropriate group 8. diminished ability to think or concentrate 9. recurrent thoughts of death
what is the mnemonic to remember DSM
SIGECAPS - sleep disturbance, interest/pleasure reduction, guilt, energy loss, concentration, appetite changes, psychomotor symptoms, suicide
anhedonia
loss of pleasure/interest in previously enjoyable activity
atypical depression
more likely to have weight gain/hypersomnia, along with leaden paralysis, carb cravings, rejection sensitivity
pseudodementia
cognitive symptoms in depressed elderly often misdiagnosed - poor concentration
diurnal variation
more depressed in AM, better in PM - melancholic type and extreme anhedonia
psychomotor symptoms
physical complaints (body aches and headaches)
seasonal affective disorder
like clockwork each year - usually winter, atypical symptoms, treat with full-spectrum light exposure, psychotherapy, antidepressants
masked depression
unaware/in denial of depression - seek care for psychomotor or somatic symptoms instead - seen in elderly/macho men
DD for depressive symptoms
hypothyroid, cushing’s syndrome, anemia, brain injury/stroke, vitamin deficiency, obstructive sleep apnea
biological factors of depression
monoamine deficiency (decreased dopamine, serotonin, NE), monoamine receptor excess, loss of neurotrophic factors, genetics (serotonin transporter gene)
psychosocial factors of depression
ability to cope with life stressors, low self esteem, personality traits, addiction, loss
relationship between cortisol and depression
increased cortisol decreased brain neurotrophic factors causing increased risk of depression
brain neuroanatomy in depression
hypoactive cortex and hyperactive amygdala
theory for why women have increased risk of depression
estrogen (stimulates serotonin) and MAO gene is on X chromosome - they have 2 X’s so if one is not completely deactivated - could have extra MAO chewing up neurotransmitter