Nausea after surgery or chemotherapy

Feeling sick after treatment has a few familiar settings. Some people wake from an anaesthetic with a churning stomach, or find that the first sip of water or the first walk to the bathroom brings a wave of queasiness. Others meet it around chemotherapy: on the day of an infusion, in the days that follow, or — for some who have had a hard cycle before — on the drive to the clinic, before any drug has been given. The feeling may come with sweating, extra saliva, a sour taste, poor appetite, retching or vomiting, and it saps the energy people need for recovery, eating and getting back on their feet.

Medical teams take this seriously, and they plan for it. Anaesthetists often give anti-sickness medicine around an operation, and cancer teams build a preventive plan into each chemotherapy cycle, matched to how likely that treatment is to cause sickness. That plan is the foundation. Nothing on this page replaces it, and nothing here should tempt anyone to skip, delay or reduce a prescribed dose. The pressing routine below is simply something extra that a patient or a family member can do by hand, in a hospital bed or at home, while the medicine does its work.

Nausea after treatment is also a symptom with many possible causes — the drugs themselves, pain relief, a bowel that is slow to wake after surgery, constipation, anxiety, infection, or a complication that needs attention. Sorting one from another belongs to the team caring for you, which is why the warning signs later on this page matter more than any point on the wrist.

Chinese medicine describes this kind of sickness as the stomach losing its proper downward movement. In the traditional picture the stomach should carry food and drink downward; when its qi turns upward instead — stomach qi rebelling upward, in the classical phrase — the result is nausea, retching and vomiting. The 2021 Chinese expert consensus on acupoint stimulation for post-operative gut problems frames sickness after surgery in exactly these terms, and the national nursing protocol for lung-cancer care sorts patients' nausea by patterns such as a spleen and stomach that are weak and cold, stomach yin that has run thin, or liver qi pressing sideways onto the stomach.

Neiguan (PC6), the inner pass on the pericardium channel, is the point tradition reaches for first. Classical filing names it the channel's luo-connecting point and one of the eight confluent points, opening the yin wei vessel, and the consensus describes it as linking the upper, middle and lower burners so that it can open the way between top and bottom, harmonise the stomach and send rebellious qi back down. The catalogue's recorded indications for it read like a list made for this page: nausea, vomiting, hiccups and stomachache.

Zusanli (ST36), below the knee, is the stomach channel's he-sea point and the stomach's lower he-sea point, traditionally used for stomachache, vomiting, abdominal distension and the tiredness of depletion. Hegu (LI4), the source point of the large intestine channel on the back of the hand, earns its place through an old idea that the liver and the large intestine communicate, so that a hand point can settle a liver crowding the stomach. The consensus names both as the companions most often paired with neiguan, and the lung-cancer nursing protocol pairs hegu with neiguan for hand pressure.

Neiguan (PC6) sits on the inner forearm, two cun above the wrist crease, between the two tendons that stand up when you make a loose fist and bend the wrist slightly. To find it, turn the palm up and lay three fingers of the other hand across the wrist with the edge of the first finger on the crease; the point lies just beyond the third finger, in the soft groove between the tendons. A comfortable, spreading ache tells you that you are close. If a drip, a cannula or a hospital wristband is in the way on one arm, use the other arm.

Hegu (LI4) is on the back of the hand, in the fleshy mound between the thumb and index finger, beside the middle of the bone that runs up to the index finger. Press the thumb against the side of the index finger and the mound rises; the point is at its highest spot. It is often tender, so arrive gently. Tradition treats hegu as a point to avoid during pregnancy, and this page follows that rule without exception.

Zusanli (ST36) lies on the front of the lower leg, about four finger-widths below the small hollow on the outer side of the kneecap, and one finger-width out from the sharp front edge of the shin bone. Sitting with the knee bent, slide a finger down from that hollow and then sideways off the shin; the point often feels like a slight dip in the muscle. After surgery on the leg, or with a dressing, a clot or swelling there, leave this point out.

Think of the routine as a few calm minutes beside your medicine, not a stand-in for it. Take anti-sickness drugs exactly as prescribed, then settle into a supported position — propped up in bed, or seated with the feet on the floor — and let the shoulders and jaw loosen before you start. Slow breathing, with the breath out a little longer than the breath in, belongs to the routine as much as the points do.

Begin at neiguan (PC6). Rest the pad of a thumb or fingertip in the groove between the tendons and press only as firmly as feels pleasant, steady rather than digging, for about a minute while you breathe slowly; then swap wrists. Neiguan can be repeated whenever a wave of queasiness builds, and some people prefer a shop-bought acupressure wristband for hands-free pressure. Next, if you are not pregnant, hold hegu (LI4) on each hand in the same way for half a minute to a minute, squeezing gently between the thumb and fingers of the other hand rather than pinching hard.

Finish with zusanli (ST36) on each leg when you are sitting comfortably and the legs are free: a thumb in the slight dip beside the shin, about a minute, then release gradually. Two or three short rounds a day is plenty, and a round before eating or before a planned walk is a sensible time. If you are too tired or unwell to press, a family member can do it with the same gentle pressure — they should ask before starting and stop the moment you say so.

The stop rules matter more than the sequence. Avoid broken, bruised, swollen or numb skin, and keep clear of drips, drains, dressings and wounds. Chemotherapy can lower the blood cells that help clotting, so anyone who bruises easily, or has been told their platelet count is low, should keep the touch very light or ask the oncology team first. After breast surgery with lymph nodes removed, ask the team before pressing on that arm, and use the other side meanwhile. Stop at once on sharp, electric or radiating sensation.

Three Chinese sources name these points. The China Association of Chinese Medicine's 2026 nursing protocols include a lung-cancer section whose advice for nausea and vomiting lists hand pressure at hegu and neiguan, alongside anti-sickness drugs given promptly as the doctor orders. The 2021 expert consensus from the Chinese Society of Anesthesiology calls neiguan the accepted standard point for preventing post-operative nausea and names zusanli and hegu among its most common companions; it describes finger pressure itself as mainly helping comfort, and prefers needling or skin-surface electrical stimulation where they are available. The Chinese Pharmaceutical Association's 2026 draft guideline on chemotherapy sickness supports needling at zusanli, neiguan and zhongwan as an add-on, and says that pressing points at home may ease mild sickness but should not replace drug treatment.

The research centres on neiguan. A 2025 Cochrane review found that non-invasive stimulation of neiguan — mostly wristbands, finger pressure and skin-surface devices — may mean fewer people feel sick or vomit after surgery than with sham pressing; its earlier 2015 version found that neiguan stimulation, much of it by needle or electrical device, roughly matched anti-sickness drugs. For chemotherapy, a 2023 review in Supportive Care in Cancer found that pressing neiguan made nausea less frequent and both nausea and vomiting less severe, and a 2017 review in the International Journal of Nursing Studies found a small easing of nausea but no clear effect on how often people vomited. A 2026 review of breast-cancer trials found that acupressure helped when added to standard anti-sickness drugs, but not when used on its own in their place.

Taken together, reviews suggest that pressing neiguan may ease nausea a little alongside standard medicine, with a less consistent effect on vomiting. The case for zusanli and hegu rests mainly on Chinese guidance and on trials that combined several points, often with needles or electrical devices, rather than on reviews of hand pressure alone, so treat them as traditional companions.

Some signs mean the problem is no longer one for self-care, and you should contact your medical team or seek urgent care rather than press any point. Vomiting blood, or material that looks like coffee grounds, needs prompt attention. So does being unable to keep fluids down, or signs of dehydration: very little or very dark urine, a dry mouth, dizziness on standing, or unusual sleepiness or confusion. After an operation, severe belly pain or a belly that keeps swelling and tightening, especially when no wind or stool has passed, can mean the bowel is blocked or has stopped working, and it needs assessment the same day.

Fever matters at every stage, and during chemotherapy it can be an emergency, because the treatment can lower the body's defences against infection; follow the instructions your cancer team gave you and call the number they provided. Chemotherapy sickness that the prescribed medicine does not control is also a reason to call the oncology team, not something to endure: there are other drugs and other ways to time them, and the team needs to know before the next cycle. Persistent symptoms belong with a licensed practitioner — Western medicine or East Asian medicine, whichever suits the complaint.

Small habits help alongside the points. Sip fluids little and often rather than in large gulps, eat small, plain meals when appetite allows, and keep strong cooking smells and perfumes at a distance. Fresh air, a cool cloth and a quiet room help many people, and both the nursing protocol and the pharmacy guideline mention ginger as a traditional aid; ask your team before adding anything you swallow, since some foods and supplements interact with cancer drugs.

This page serves patients and families who want something calm to do with their hands while the medical plan does its work, and readers curious about why a wrist point turns up on hospital wards. If your sickness comes on a moving boat, car or plane rather than after treatment, the site's travel nausea page covers motion sickness. The catalogue pages for PC6, LI4 and ST36 hold precise locations, recorded actions and cautions, and the surgical or cancer team that knows your case remains the right first call for anything that worries you.

Can acupressure replace my anti-sickness medicine?

No. Every source behind this page treats point pressing as an add-on: the nursing protocol gives anti-sickness drugs promptly as the doctor orders, and the pharmacy guideline says pressing points should not replace medicine. Take prescribed doses on time, and if sickness breaks through, tell your team rather than relying on your fingers.

Is it safe to press points while I have a drip or a fresh wound?

Keep well clear of drips, cannulas, drains, dressings and wounds, and use the other arm or leg instead. If your platelet count is low or you bruise easily during chemotherapy, keep the touch very light or ask the team first. When in doubt, the nurses caring for you can say which limbs are free to use.

Where exactly is neiguan (PC6)?

Turn the palm up and lay three fingers of the other hand across the wrist, the first finger on the crease. Neiguan sits just beyond the third finger, in the groove between the two tendons in the middle of the forearm. A comfortable, slowly spreading ache is a sign that you are in the right place.

Do acupressure wristbands work the same way?

They press the same spot on the forearm, and much of the research on non-invasive neiguan stimulation used bands like these. A band gives steady pressure without effort, which suits a tired patient; a fingertip lets you adjust moment by moment. Check that the band sits on intact skin and is never tight around a swollen arm.

Is hegu (LI4) safe during pregnancy?

Tradition lists hegu among the points to avoid during pregnancy, and this page follows that rule: leave it out entirely while pregnant. Neiguan is traditionally used gently in pregnancy, but anyone who is pregnant and facing surgery or cancer treatment should agree any self-care plan with their medical team first.

Does pressing help with vomiting as well as nausea?

Less clearly. The reviews behind this page found more consistent easing of nausea than of vomiting, and one review of chemotherapy found no clear effect on how often people vomited. Vomiting that keeps fluids from staying down is a reason to call your team, not a reason to press harder.

1. 01WHO Standard Acupuncture Point Locations in the Western Pacific Region (2008) — landmark descriptions followed for neiguan (PC6), hegu (LI4), and zusanli (ST36).
2. 02A Manual of Acupuncture (Deadman, Al-Khafaji & Baker) — point categories and general associations consulted for traditional framing.
3. 03aijiu-mpvue (MIT License), licensed dataset — point identities, recorded indications, and cautions underlying this overview.
4. 04China Association of Chinese Medicine (中華中醫藥學會), Nursing protocols in Chinese medicine for 13 conditions including stroke (2026 edition), lung cancer (肺積) section, nausea and vomiting — hand pressure at hegu and neiguan: https://www.cacm.org.cn/wp-content/uploads/2026/09/附件1.-中风等13个病种中医护理方案（2026年版）全文.pdf
5. 05Chinese Society of Anesthesiology (中華醫學會麻醉學分會), Expert consensus on acupoint stimulation for preventing and treating postoperative gastrointestinal dysfunction (2021), full text as reposted: https://www.cn-healthcare.com/articlewm/20210816/content-1253395.html
6. 06Chinese Pharmaceutical Association (中國藥學會), Guideline for drug prevention and treatment of chemotherapy-induced nausea and vomiting, 2nd edition, draft for comment (2026): https://www.cpa.org.cn/cpadmn/attached/file/20260626/1782459551543346.pdf
7. 07Lee A et al., Stimulation of the wrist acupuncture point PC6 for preventing postoperative nausea and vomiting: a network meta-analysis, Cochrane Database of Systematic Reviews (2025): https://doi.org/10.1002/14651858.CD003281.pub5
8. 08Lee A, Chan SK, Fan LT, Stimulation of the wrist acupuncture point PC6 for preventing postoperative nausea and vomiting, Cochrane Database of Systematic Reviews (2015): https://doi.org/10.1002/14651858.CD003281.pub4
9. 09Xiao C et al., Effects of PC6 acupressure on acute and delayed nausea and vomiting induced by chemotherapy in patients with malignant neoplasm: a meta-analysis, Supportive Care in Cancer (2023): https://doi.org/10.1007/s00520-023-07976-0
10. 10Miao J et al., Effects of acupressure on chemotherapy-induced nausea and vomiting: a systematic review with meta-analyses and trial sequential analysis, International Journal of Nursing Studies (2017): https://doi.org/10.1016/j.ijnurstu.2017.02.014
11. 11Quan XM et al., Clinical evidence of acupressure for improving chemotherapy-induced nausea and vomiting in breast cancer patients: a systematic review and meta-analysis, Complementary Therapies in Medicine (2026): https://doi.org/10.1016/j.ctim.2026.103459