Pheochromocytoma: the adrenaline tumor behind the pounding episodes
Last updated September 3, 2026.
A pheochromocytoma is the rare tumor of the adrenal gland (the usually-benign kind) that pumps out the adrenaline-and-noradrenaline in the bursts: causing the episodes (the attacks) of the pounding heart, the pounding headache, the drenching sweating, and the surging blood pressure, sometimes with the terror-feeling. The classic triad is the headache-palpitations-sweating, the diagnosis is the urine-or-blood metanephrines test, and the surgical removal usually cures it: but the unrecognized kind is dangerous (the strokes, the crises during the surgery-or-childbirth), which is why the testing matters.
What does it feel like?
The attack-kind rows (the minutes-to-an-hour, the coming-from-nowhere): the pounding-racing heart, the severe throbbing headache, the drenching sweats, the pale-then-flushed skin, the shaking, the chest tightness, and the doom-feeling (the adrenaline doing exactly what the fear does, unprovoked), with the blood pressure spiking high during (the sometimes captured on the home-or-pharmacy readings). The triggers can be the nothing, the bending, the abdominal pressure, the certain drugs, or the anesthesia: the last being the dangerous kind.
Why does it happen?
The adrenal-medulla tumor (the chromaffin cells over-producing: the sporadic in the most), with the substantial hereditary fraction (the up-to-40-percent genetic kind: the MEN2, the von Hippel-Lindau, the SDH-gene rows: the genetic testing now standard for the all-diagnosed), and the rare extra-adrenal kind (the paragangliomas: the similar behavior). It is the nobody's-fault row.
How is it diagnosed and treated?
- The metanephrines test: the plasma-free-or-24-hour-urine metanephrines (the sensitive row: the ordinary-between-attacks testing works: the hormone-breakdown products stay elevated).
- The imaging-and-genetics: the CT-or-MRI localizing, the genetic testing for the all (the hereditary-kind implications for the family).
- The crucial pre-surgery rule: the alpha-blockers FIRST (the phenoxybenzamine-kind: the weeks of the blockade before any surgery: the operating-unblocked is the dangerous-crisis kind), then the beta-blockers if needed.
- The surgery: the keyhole adrenalectomy (the cure for the most: the pressure-and-attacks resolving), with the lifelong follow-up (the recurrence-and-genetic-kind rows).
When is it an emergency?
The ER for the attack with the chest pain, the breathlessness, the stroke-signs, or the pressure-reading very high (the 180-plus-systolic kind with the symptoms). And the one rule to carry: the any planned surgery-or-procedure needs the team told (the unblocked anesthesia is the crisis-trigger). Pymander's escalation routing is built and tested specifically for this class of decision; see the safety architecture working paper.
What a Pymander AI doctor consult looks like
Illustrative example, not a real member's messages.
Common questions
Could these attacks just be panic attacks?
The real overlap (the adrenaline-surge symptoms are the same biology: the heart, the sweat, the doom-feeling), and the distinguishing rows: the captured-blood-pressure-spike (the panic attacks do not push the 210/120: the pheochromocytoma does), the drenching-sweat-plus-pounding-headache prominence, and the metanephrines test settling it biochemically (the panic-kind rows read the normal). The row gets tested, not argued: your doctor's urine test is exactly the sorting tool.
Is this tumor cancer?
The usually-not: the most pheochromocytomas are the benign kind (the confined-to-the-adrenal row: the surgery cures), the malignant-kind exists (the spread-capable: the SDHB-kind mutations the higher-risk row: the genetic testing sorts it), and the follow-up continues the lifelong-kind for the all (the recurrence rows: the annual metanephrines the light-touch kind). The word tumor frightens more than this tumor usually deserves.
Why did my doctor mention genetic testing? Is my family at risk?
Because the field changed: the up-to-40-percent of the pheochromocytomas carry the hereditary gene (the MEN2, the von Hippel-Lindau, the SDH-row kinds), so the genetic testing is now the standard for the all-diagnosed (the not-because-you-look-inherited row), and the positive-kind finding does the two jobs: the your-surveillance tailored (the other-tumor-kinds watched) and the family offered the cascade-testing (the finding-the-relatives-early kind: the life-saving row for the SDHB-kind). The negative-result kind (the majority) closes the family question.
What is the surgery like, and does it fix the blood pressure?
The keyhole adrenalectomy in the most (the laparoscopic kind: the few-nights stay, the weeks-recovery), with the crucial pre-op row: the alpha-blocker started the weeks before (the phenoxybenzamine-kind: the hormone-surges blocked: the surgery-then-safe kind), and the outcomes the satisfying kind (the attacks resolving completely for the most, the blood pressure normalizing-or-much-improving: the some keep the mild-pressure-medicines: the years-of-damage kind). The cured-kind rows dominate.
Are there medicines or foods I must avoid now?
The real list, worth the keeping: the decongestants (the pseudoephedrine-kind), the some antidepressants (the tricyclics, the SNRI-kind), the metoclopramide, the steroid-jolts, and the recreational stimulants (the cocaine-amphetamine rows: the crisis-kind triggers), plus the anesthesia caution (the any-procedure-tell-them row), and the tyramine-heavy foods in the unblocked phase (the aged-cheeses-cured-meats kind: the pressure-spiking potential). Your team gives the personal list as the workup proceeds.
What happens if an attack hits hard?
The attack-plan: the sitting-still (the no-driving, the no-stairs), the slow-breathing (the panic-compounding avoided), the sips-of-water, and the escalation rule (the chest pain, the breathlessness, the weakness-or-speech-trouble, the vision-change, or the pressure 180-plus-systolic with the symptoms: the ER row, the ambulance kind: the stroke-and-heart risks of the unmanaged surges are the real kind). The attacks pass, but the big-kind deserves the seen kind. After the surgery, this section retires.