Anesthesiology APPLIED Exam › Obstetric anesthesia

Post-dural puncture headache

Obstetric anesthesia·~5 min read· Physician-reviewed✓ Sourced · 4

Stem

A 26-year-old woman, 64 kg, is on postpartum day 2 after a vaginal delivery. Her labor epidural was placed on the second attempt, and the first pass had a brief flash of clear fluid that was not recognized as a wet tap. She now has a frontal and occipital headache that starts within minutes of sitting up and resolves lying flat, with neck stiffness and photophobia. Blood pressure is 128/78, temperature 37.0 °C, and the neurologic examination is normal.

Question

She wants to go home with her baby tomorrow. How do you evaluate and treat her headache?

Ideal answer

HeadlineTypical post-dural puncture headache; I examine her and exclude red flags first. With none, and the headache disabling her, I offer an epidural blood patch.

History and exam: positional frontal or occipital headache, worse within 15 minutes of sitting, relieved lying down, 1–3 days after a suspected puncture, neck stiffness, photophobia; I ask about tinnitus.
Red flags: focal deficit, fever, seizure, hypertension, non-positional headache, altered consciousness mean neurology and imaging; her normal pressure matters: pre-eclampsia also presents this way.
Mechanism and options in plain terms: brief conservative care (fluids, caffeine, simple analgesics), then the patch, as it limits her care of the baby.¹
15–20 mL of sterile autologous blood at or below the puncture level, stopping when she feels back pressure.¹
Daily follow-up until resolution; one patch does not always work; she calls if it changes character.

Breaking down the answer

Mechanism — CSF leak lowers intracranial pressure; the brain sags onto pain-sensitive structures and compensatory venodilation (Monro-Kellie) causes the headache. Sitting worsens both.
Why the differential is graded — a pre-eclamptic headache with hypertension, or a subdural from prolonged low CSF pressure, is missed when every postpartum headache is labeled PDPH. Loss of positional character after a long PDPH is a subdural until imaged.
Blood patch timing and dose — the 2023 multisociety consensus² keeps it for a headache that impairs daily life despite conservative care; within 48 hours it more often needs repeating; no more than 30 mL.¹ I offer a second if the diagnosis still fits.
Contraindications — fever or bacteremia, coagulopathy, infection at the site, refusal. Thrombocytopenia: the same reasoning as any obstetric neuraxial procedure, 70,000 or more carries very low hematoma risk.³ I do not patch through an active infection.
Sphenopalatine ganglion block and drugs — not routinely recommended, nor are hydrocortisone or triptans; a greater occipital nerve block may be offered after a narrower-gauge needle, though the headache may recur.¹
After an accidental dural puncture in labor — threading the catheter intrathecally as a continuous spinal avoids re-puncture and gives reliable analgesia, all staff told, catheter clearly labeled; it has not been shown to reduce headache or blood patch rates versus re-siting.⁴

Follow-up question

Three days after the blood patch she calls back. The headache is now constant, not positional, and she has vomited twice and is confused. What do you do?

Follow-up answer

HeadlineNo longer a typical PDPH; she comes back immediately and I meet her in the emergency department.

I check blood pressure, temperature and neurologic status. Loss of positional character with new neurology suggests a subdural hematoma or cerebral venous thrombosis, and the postpartum period adds eclampsia and PRES. Urgent neurology and neuroimaging, preferably MRI with venography, and no further blood patch until the diagnosis is clear. I explain to her and her partner what we are looking for and why, and reassess her neurologic status while she waits for imaging.

Pitfalls that cost points

Prescribing bed rest as treatment: it gives only temporary relief and is not routinely recommended.¹
Promising prevention with a prophylactic patch straight after a wet tap; it is not routinely advised.¹

Rapid-fire

Q: Why do pencil-point needles reduce PDPH? A: Non-cutting needles carry a lower risk than cutting needles;¹ they separate rather than cut dural fibers and leave a hole that seals better.

Q: How does a blood patch work immediately? A: The volume compresses the thecal sac and raises CSF pressure; the clot then seals the leak.

Q: What is the incidence after an epidural needle wet tap? A: About half of parturients develop a headache (52% in a recent meta-analysis), more with a 16-gauge than an 18-gauge needle.⁴

Q: Why is the parturient at higher risk? A: Pregnant women have a higher PDPH risk after dural puncture;⁴ young age, female sex, and pushing in the second stage after a puncture all increase leak and headache.

Numbers to know

Item	Value
Onset	Suspect PDPH if symptoms begin within 5 days of a neuraxial procedure¹
Accidental dural puncture with epidural needle	~1% of epidurals; ~52% develop headache⁴
Blood patch volume	15–20 mL autologous blood; avoid more than 30 mL¹
Early patch	Within 48 h of puncture: repeat more often needed¹
Caffeine	May be offered in the first 24 h (low certainty)¹

Sources

1.Collaborative Excellence: The Multi-Society Post-Dural Puncture Headache Guidelines · ASRA Pain Medicine News (Uppal V, guideline co-chair), 2024 · asra.comSummary of the multisociety PDPH guidelines (Uppal et al., Reg Anesth Pain Med 2024;49:471-501; JAMA Netw Open 2023 summary). Suspect PDPH within 5 days of a neuraxial procedure; non-cutting needles lower risk (high certainty); bed rest not routine; caffeine may be offered in the first 24 h; acetaminophen/NSAIDs; SPG block, hydrocortisone, triptans not routine; GON block may be offered; EBP for PDPH refractory to conservative care and impairing daily life, 15-20 mL, avoid >30 mL, repeat more often needed if within 48 h; platelets >=70,000 low hematoma risk; imaging for non-orthostatic, late-onset or neurological symptoms; follow up until resolved.
2.Consensus Practice Guidelines on Postdural Puncture Headache From a Multisociety, International Working Group: A Summary Report · JAMA Netw Open (Uppal et al.), 2023 · europepmc.orgAbstract read: six societies, 21 collaborators, 47 recommendations, many of moderate-to-low certainty; a framework for risk assessment, diagnosis and systematic management.
3.SOAP Interdisciplinary Consensus Statement on Neuraxial Procedures in Obstetric Patients With Thrombocytopenia · SOAP (Bauer et al., Anesth Analg), 2021 · soap.org
4.Obstetric Regional Anesthesia · NYSORA · nysora.com

Facts on this page were checked against these sources on Nov 2, 2026. Guidelines change; confirm doses against current institutional protocols.