Etiology

White Toxin-Spreading MushroomMushrooms, also known as fungi, belong to the fungi plant family. Poisonous mushrooms refer to those that can cause food poisoning when consumed. Characteristics of poisonous mushrooms: they are often brightly colored, have wart-like growths, sticky or brittle surfaces, rings on their stems, and cup-like structures at the base; they usually grow on decaying matter or manure, most are not infested with insects, and may have a fishy, spicy, bitter, sour, or foul odor, and easily change color or exude milky fluid when damaged. There are about 100 species of poisonous mushrooms, among which 10 are highly toxic and can be fatal. The toxic components in poisonous mushrooms are very complex—one species may contain several toxins, and one toxin may be present in multiple species. Mushroom poisoning mostly occurs in hot, rainy seasons, often due to individuals foraging wild mushrooms without the experience to distinguish between toxic and non-toxic varieties, leading to accidental ingestion.
Toxic Components and Symptoms of Mushroom Poisoning
There are many types of poisonous mushrooms, each with different toxic components and symptoms. Therefore, based on the clinical manifestations of their toxic substances, they can be categorized into the following types.
1. Gastrointestinal Toxic Type
Symptoms include abdominal pain, diarrhea, watery stools, nausea, vomiting, and usually no fever. Incubation period is 0.5–6 hours. The course of illness is short—2–3 days—with low mortality. Representative species include certain types from the genus Amanita and Lactarius. The toxin may be a resin-like substance.
2. Neurological and Psychiatric Type
Poisonous mushrooms that cause this type of poisoning contain toxins that induce neurological and psychiatric symptoms. The incubation period is 0.5–4 hours. In addition to gastrointestinal reactions, the main symptoms are neurological and psychiatric: drooling, constricted pupils, slow pulse, and in severe cases, delirium, mental confusion, hallucinations, and auditory hallucinations. Ingestion of some toxic species from the genus Amanita may also cause "Lilliputian" hallucinations. The illness typically lasts 1–2 days, with a good prognosis and low mortality.
Toxins causing this type of poisoning include: muscarine, illudin, psilocybin, and phallotoxins.
3. Hemolytic Type
Caused by the panther cap mushroom (Amanita pantherina), with the toxic component being pantherine, a methylhydrazine compound that has strong hemolytic effects. The incubation period is generally 6–12 hours. Often following gastrointestinal inflammation, hemolytic jaundice, liver and spleen enlargement may occur, and a few patients may develop proteinuria.
4. Organ Damage Type
This is the most severe form of poisoning, with toxic components mainly consisting of amatoxins and phallotoxins, found in species such as Amanita, Galerina marginata, and Cortinarius rubellus. These toxins are extremely poisonous, with a lethal dose for humans as low as 0.1 mg per kg of body weight, capable of causing cellular degeneration in most organs. As little as 50g of fresh mushrooms containing these toxins can be fatal. Without timely treatment, the mortality rate is very high, ranging from 50% to 60%.
The symptoms of organ damage type poisoning are very complex and are divided into six stages based on disease progression.
a. Incubation Period: This type has a longer incubation period, generally 10–24 hours.
b. Gastroenteritis Period: Nausea, vomiting, abdominal pain, severe diarrhea with watery stools, accompanied by dizziness, headache, weakness, lasting 1–2 days.
c. False Recovery Period: Patients may temporarily show no symptoms or feel only mild fatigue, but experience a sudden mental improvement, feeling as if they have recovered, creating a false sense of recovery while toxins have actually entered internal organs and liver damage has begun. Milder cases may progress to recovery.
d. Organ Damage Period: Within 2–3 days after onset, patients with severe poisoning may exhibit damage to solid organs such as the liver, kidneys, brain, and heart, with liver damage being the most serious. Symptoms may include liver enlargement, jaundice, abnormal liver function, and in severe cases, liver necrosis or hepatic coma. Kidney damage may lead to reduced or no urine output, even progressing to uremia or kidney failure.
e. Psychiatric Symptom Period: Patients may exhibit delirium, restlessness, flat affect, drowsiness, followed by convulsions, coma, and even death.
f. Recovery Period: With timely treatment, patients enter the recovery phase after 2–3 weeks, with symptoms improving and full recovery.
5. Allergic Dermatitis Type
Caused by ingestion of the jelly-like fungus (also called pig-mouth mushroom). Symptoms include swelling and pain on exposed skin areas such as the face, especially the lips, which may swell and evert resembling pig snouts. There may also be bleeding at fingertips or nail bases.
Preventive Measures and Detoxification Methods
Preventive Measures
Widely publicize the dangers of poisonous mushroom poisoning. Organized mushroom gathering should be conducted under the guidance of experienced individuals. Avoid picking unfamiliar or untried mushrooms, especially important for educating children.
Improve the ability to identify poisonous mushrooms—be familiar with and understand the morphological features and internal structures of various poisonous mushrooms, and use local knowledge to help distinguish them to prevent accidental poisoning.
Detoxification Methods
Currently, there is no specific antidote for mushroom poisoning. If poisoned, toxins should be expelled as soon as possible through methods such as inducing vomiting, gastric lavage, laxatives, or enemas. For home-induced vomiting, you can use your fingers, chicken feathers, chopsticks, or similar items to stimulate the throat to induce vomiting, and seek medical treatment at a hospital as soon as possible.

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