Nursing care
Postpartum Blues nursing care: what to assess and what to do first
Written and reviewed by Dana Whitfield, RN, MSN · 4 min read · Updated September 2026
Short answer
Postpartum blues is tearfulness, mood lability and irritability starting around day three postpartum and resolving by two weeks, driven by the abrupt drop in oestrogen and progesterone after delivery. The same picture persisting past two weeks, or any thought of harming the baby, is not blues. It is depression or psychosis, and it needs immediate referral.
Recognising it at the bedside
Watch for onset around day three to five, when oestrogen and progesterone fall sharply after placental delivery. The mother cries without an obvious trigger, snaps at a partner over nothing, then laughs at the next visitor. Mood swings within a single shift are the signature, not a flat or persistently low mood.
She still bonds with the infant. She feeds, holds and makes eye contact, even while tearful. Sleep is disrupted but she can be reassured and settles. Document the timing precisely, because timing is what separates this from a psychiatric emergency later in the same admission or at the two-week check.
Why the classic presentation misleads
New nurses often chart tearfulness as a red flag and escalate to psychiatry, or the reverse: they normalise every postpartum mood change as blues and miss the one patient who needed intervention. Both errors come from treating this as a diagnosis by symptom alone rather than by symptom plus duration.
The distinguishing fact is time, not intensity. A mother sobbing inconsolably on day four who is reassurable and improving by day ten is within the expected course. A mother with a flat, muted mood on day twenty who has not improved is not, even if she never raises her voice. Match the assessment to the calendar, not to how dramatic the crying looks on a given shift.
Priority nursing actions
Assess mood at every contact using open questions: how is she coping, how is she sleeping, does she have support at home. Screen with a validated tool such as the Edinburgh Postnatal Depression Scale before discharge, and repeat it at the postpartum visit rather than relying on a single point-in-time impression.
Ask directly about thoughts of self-harm or thoughts of harming the infant. This question does not increase risk, and skipping it because it feels intrusive is the more common nursing error. Involve the partner or support person in teaching so someone at home is watching for symptoms that outlast two weeks, and document the safety screen explicitly, not just the mood description.
Labs and diagnostics to expect
There is no laboratory test that confirms postpartum blues; it is a clinical diagnosis based on timing and presentation. A thyroid panel, particularly TSH, is reasonable when mood symptoms are severe or prolonged, because postpartum thyroiditis can mimic or worsen mood disturbance and is easily missed if no one checks.
Standardised screening tools do the diagnostic work here rather than blood work. The Edinburgh Postnatal Depression Scale is the most widely used; a rising score across two administrations is more informative than a single score. Reserve further workup, including psychiatric consultation, for scores that stay elevated or for any disclosure of intent to harm.
Complications and their early signs
The complication to watch for is progression, or misdiagnosis of what was never blues to begin with. Postpartum depression presents past the two-week mark with persistent low mood, anhedonia, appetite change and difficulty bonding that does not lift with reassurance and rest.
Postpartum psychosis is the emergency. Look for disorganised thinking, hallucinations, delusions often centred on the infant, and any stated intent to harm the baby or herself. This onset can be rapid, sometimes within the first two weeks, and it requires immediate psychiatric evaluation and, in most cases, inpatient admission. Do not wait for the two-week mark to act if psychotic features appear.
Teaching that changes outcomes
Tell the mother and her support person, before discharge, that tearfulness and mood swings in the first two weeks are expected and usually resolve on their own. Naming this in advance reduces the shame that stops women from mentioning it at follow-up, which is often the only reason a worsening case gets caught.
Give an explicit instruction: if the mood has not improved by two weeks, or if at any point she has thoughts of harming herself or the baby, that is not blues and she should contact her provider that day, not wait for the six-week visit. Provide a crisis line number in writing. Verbal instructions get forgotten under sleep deprivation; a written number on the discharge sheet does not.
The next step on this is the same as on everything else here: answer questions and read the rationales. Our maternity and newborn practice questions are the closest set to what this page covers.
Common questions
How long does postpartum blues normally last?
From around day three postpartum, resolving by two weeks. If tearfulness or mood lability is still present past two weeks, reclassify and screen for postpartum depression rather than continuing to reassure.
Do I need to medicate postpartum blues?
No. It is self-limiting and managed with reassurance, rest and support. Medication becomes relevant only if the picture evolves into depression or psychosis.
What's the single question that separates blues from something more serious?
Ask directly whether she has had any thought of harming herself or the baby. A yes answer, at any point in the postpartum period, overrides the two-week timeline and needs immediate psychiatric evaluation.
How is this tested on the NCLEX?
Expect a scenario giving a specific postpartum day and a mood description, asking you to identify normal versus abnormal. The day count in the stem is the detail the question is testing, so read it before reading the symptoms.