Snake Bite First Aid in Bangladesh: What to Do (and Never Do)

In 2025, Bangladesh experienced one of its worst snakebite years on record: nearly 15,000 people were admitted to hospitals after a snakebite, and at least 84 died, according to news reports citing government data, following record monsoon rains and severe flooding that pushed snakes out of their natural habitats and into homes, fields, and even beds. The year before, 2024, saw around 118 confirmed snakebite deaths nationwide. Behind these numbers is a public health problem that experts have long flagged: most victims are farmers, day laborers, and rural residents bitten while working barefoot in paddy fields or walking at night, and many still lose precious hours to traditional healers before ever reaching a hospital. Knowing the correct first aid, and the myths to avoid, can be the difference between a full recovery and a preventable death.

Why Snakebite Is a Growing Concern in Bangladesh

Bangladesh is home to several medically important venomous snakes, and their populations and ranges have been shifting. The Russell's viper (চন্দ্রবোড়া), once considered rare in the country, has seen a marked resurgence since around 2013 and is now frequently reported in the northwestern and central char (river sandbar) areas, partly linked to changes in farming patterns, flooding, and its own high reproductive rate. Alongside it, the monocled cobra, spectacled cobra, common krait, banded krait, and various pit vipers (including the green pit viper common in home gardens and bushes) account for most serious envenomations across the country.

Monsoon season, roughly June to October, is the peak risk period. Heavy rain floods burrows and fields, forcing snakes into the open and into contact with people; farmers working in flooded paddies, families in flood shelters, and people walking outside at night without light are at the highest risk. Most bites occur on the feet or lower legs, and a large proportion happen when people step on a snake they did not see or reach into grass, rice stacks, or holes without checking first.

Recognizing a Venomous Bite

You cannot always tell whether a bite was from a venomous snake, and this uncertainty is exactly why every bite from an unidentified snake should be treated as a possible medical emergency. That said, some general patterns can help:

• Venomous bites often leave one or two deep puncture marks from fangs, sometimes with immediate pain, bleeding, or rapid swelling around the wound.
• Non-venomous bites more often leave a curved row of shallow scratch marks from small teeth, with less pain and slower or minimal swelling.

However, a meaningful proportion of bites by venomous snakes are "dry bites," where little or no venom is actually injected, and these can look identical to a mild, harmless bite in the first few minutes. Because there is no reliable way to confirm this outside a hospital, medical observation is recommended after any bite that could have come from a venomous species.

Symptoms: What the Venom Actually Does

Bangladeshi snake venoms broadly cause two, sometimes overlapping, patterns of illness, and recognizing them early helps both the patient and the treating hospital.

Neurotoxic Effects (typically cobras and kraits)

• Drooping eyelids (ptosis) and difficulty opening the eyes fully
• Blurred or double vision
• Difficulty swallowing, slurred speech, or a change in voice
• Progressive muscle weakness that can spread to the muscles of breathing over several hours, which is life-threatening without ventilator support

Hemotoxic and Procoagulant Effects (typically Russell's viper and pit vipers)

• Persistent bleeding or oozing from the bite site that will not stop with normal pressure
• Bleeding gums, nosebleeds, or blood in urine or vomit
• Marked local swelling, blistering, bruising, or skin discoloration spreading up the limb
• In case reports from Bangladesh, Russell's viper bites have also caused drooping eyelids, restricted eye movement, and eye redness alongside these bleeding problems, and can progress to acute kidney injury

General Symptoms (any venomous bite)

• Nausea, vomiting, abdominal pain
• Sweating, chills, or a fast heartbeat
• Dizziness, weakness, or fainting from a drop in blood pressure

Symptoms can take anywhere from a few minutes to several hours to appear, so a person who "feels fine" immediately after a bite from an unidentified snake should still be taken for evaluation and kept under observation.

First Aid: What You Should Actually Do

• Move away from the snake and keep the person calm and still. Panic and movement speed up how fast venom spreads through the lymphatic system.
• Remove rings, watches, bangles, and tight clothing near the bite before swelling makes this difficult or dangerous.
• Keep the bitten limb still and roughly at the level of the heart. Do not elevate it high above the heart or let it hang far below.
• Apply a firm (not tourniquet-tight) bandage over and around the bite, wrapping from just above the fingers or toes upward along the limb, similar to how you would wrap a sprained ankle. You should not be able to easily slide a finger under the bandage, but it should not cut off circulation or turn the limb blue or numb. This is the internationally recommended "pressure immobilization" technique, most strongly advised for suspected cobra or krait bites; where there is heavy local swelling or blistering (more typical of viper bites), avoid excessive tightness and prioritize immobilizing the limb with a splint or sling instead.
• Note the time of the bite and, if possible, mark the edge of any advancing swelling on the skin with a pen so hospital staff can track how fast it is spreading.
• Get to the nearest hospital or upazila health complex as quickly as possible, ideally by vehicle rather than on foot, since movement of the whole body (not just the limb) also speeds venom circulation.
• Tell the treating doctor everything you noticed: what the snake looked like if seen, the time of the bite, and any symptoms that have appeared, such as drooping eyelids or bleeding.

What You Should Never Do

Certain traditional and folk practices are widely believed to help but are proven to cause additional harm, delay real treatment, or both:

• Do not tie a tight tourniquet. Cutting off arterial blood flow for an extended period can cause nerve damage, tissue death, and limb loss, without reliably stopping venom spread.
• Do not cut, slash, or make incisions over the bite, and do not try to suck out the venom by mouth. This removes almost no venom, introduces infection, and can injure the person doing the sucking.
• Do not apply ice, herbal pastes, kerosene, chili, or other traditional substances to the wound.
• Do not give alcohol or caffeine, and avoid aspirin, ibuprofen, or other NSAID painkillers, which can worsen bleeding problems; paracetamol is the generally preferred option if pain relief is needed while traveling to hospital.
• Do not visit a traditional healer, ojha, or snake charmer instead of a hospital. This remains one of the leading, and entirely preventable, causes of snakebite death in Bangladesh, because the only treatment that neutralizes venom is antivenom given intravenously at a medical facility.
• Do not try to catch or kill the snake to bring to the hospital, since this risks a second bite to the patient or a helper. A photo taken safely from a distance is sufficient if it does not delay travel.

Diagnosis and Treatment at the Hospital

At the hospital, doctors assess for local signs (swelling, bleeding, blistering) and systemic signs (ptosis, breathing difficulty, bleeding from other sites, low blood pressure). A key bedside test used in Bangladesh and across South Asia is the 20-minute whole blood clotting test (20WBCT): a small sample of the patient's blood is placed in a clean, dry glass tube and left undisturbed for 20 minutes. If the blood has not formed a firm clot by then, it strongly suggests venom-induced coagulopathy, most classically from Russell's viper envenoming, and supports the decision to give antivenom.

Treatment centers on polyvalent antivenom, given intravenously in a hospital setting under medical supervision, since antivenom carries its own risk of allergic reactions that must be managed by trained staff. As of the 2026 monsoon season, the Directorate General of Health Services (DGHS) has worked to stock antivenom at all upazila health complexes and district hospitals nationwide, with treatment free of charge at government facilities; this followed years of criticism, including a High Court directive, over antivenom being concentrated in city hospitals while most bites occur in villages far away. Depending on the case, supportive treatment may also include anticholinesterase therapy (such as atropine combined with neostigmine) for neurotoxic paralysis from cobra or krait bites, ventilator support if breathing muscles are affected, blood or clotting factor transfusion, dialysis for kidney injury, and wound care for local tissue damage.

Special Considerations

Children

Children receive a proportionally larger dose of venom relative to their body weight and can deteriorate faster than adults. They may also struggle to describe symptoms like blurred vision or a "heavy" feeling. Any suspected snakebite in a child warrants immediate hospital transport, even if the child appears well.

Pregnant Women

Snakebite during pregnancy carries added risks, including the possibility of bleeding complications affecting the placenta and the pregnancy itself. Pregnant women who are bitten need urgent hospital care with both emergency medicine and obstetric input, since decisions about antivenom and monitoring the pregnancy need to happen together.

Elderly Patients and Those with Existing Conditions

Older adults, people with kidney disease, and those taking blood-thinning medication can face a more severe course from hemotoxic venom, since their bodies may already have reduced capacity to manage bleeding or kidney stress. Doctors should always be told about any existing health conditions or regular medications.

When to Rush to the Hospital Immediately

Treat any of the following as a medical emergency requiring the fastest possible transport:

• Drooping eyelids, blurred or double vision, or difficulty swallowing or speaking
• Difficulty breathing or a feeling of chest tightness
• Bleeding from the gums, nose, or in urine or vomit, or a wound that will not stop bleeding
• Rapidly spreading swelling, especially with blistering or skin discoloration
• Dizziness, fainting, or a rapid, weak pulse
• Any bite in a child, pregnant woman, or elderly or chronically ill person, even without obvious symptoms

Prevention: Reducing Your Risk

• Wear boots or thick rubber gumboots when walking in fields, tall grass, or flooded areas, especially at night.
• Always carry a torch or phone light when walking outside after dark during monsoon season, and watch where you step.
• Sleep under a tucked-in mosquito net, which also provides some protection against snakes entering the sleeping area at night, a documented cause of household bites in rural Bangladesh.
• Avoid putting hands or feet into holes, dense undergrowth, woodpiles, or under stones without first checking with a stick or light.
• Keep the area around the home clear of rubbish, tall grass, and rodent burrows, since rodents attract snakes.
• Store harvested rice, straw, and firewood away from sleeping areas and off the ground where possible.
• If you see a snake, back away slowly rather than approaching, cornering, or trying to kill it; most bites happen when snakes are startled, threatened, or accidentally stepped on.

Sources: Guidelines and data referenced from the Directorate General of Health Services (DGHS), Bangladesh; the World Health Organization (WHO) South-East Asia Regional Office snakebite envenoming program; and peer-reviewed clinical research on Bangladeshi snake venom and envenomation published in toxicology and tropical medicine journals.