
Muscle soreness and pain can be caused by a variety of poisons. For example, strychnine poisoning can cause muscle spasms, stiffness, convulsions, and soreness. Heavy metal poisoning from manganese or mercury can also lead to muscle spasms, stiffness, and soreness. Additionally, certain medications, such as cholesterol-lowering drugs and statins, can have adverse effects on muscles, causing soreness and weakness. Snake venoms can also cause severe muscle weakness and even rapid muscle fibre necrosis. Furthermore, alcohol consumption is known to cause muscle weakness. Finally, rhabdomyolysis, which can be caused by severe burns, high-intensity exercise, severe dehydration, or overheating, results in muscle soreness and weakness.
| Characteristics | Values |
|---|---|
| Poison causing muscle soreness | Strychnine, heavy metals (lead, mercury, arsenic, cadmium, manganese, nickel, selenium, zinc, tin, gold), cholesterol-lowering drugs, alcohol, snake venom |
| Symptoms | Muscle pain and stiffness, muscle spasms, convulsions, seizures, hypersensitivity to external stimuli, muscle soreness, muscle weakness, muscle contractions, muscle twitching, muscle stiffness, muscle fatigue, muscle damage, muscle tremors, muscle rigidity, muscle movements |
| Treatment | Activated charcoal, gastric lavage, tannic acid or potassium permanganate solutions, muscle relaxants, anticonvulsants, toxin removal, intravenous hydration, active cooling, hemodialysis, chelating agents |
| Prevention | Evacuation, sheltering in place, moving to fresh air, avoiding exposure |
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What You'll Learn

Snake venom poisoning
Snake venom is a poisonous toxin that enters the body through injection. It is a substance that snakes produce to help them capture prey, protect themselves, and digest food. Snake bites can be venomous or nonvenomous, and it can be difficult to identify whether a snake is venomous or not. Therefore, every snake bite should be treated as a medical emergency.
Myotoxins are small, basic peptides found in rattlesnake and lizard venoms. They act very quickly, causing instantaneous paralysis to prevent prey from escaping and eventually death due to diaphragmatic paralysis. Myotoxins lead to severe skeletal muscle necrosis and rhabdomyolysis, which is characterised by muscle soreness, dark-coloured urine, dehydration, decreased urination, and loss of consciousness.
Phospholipase is an enzyme found in snake venom that transforms the phospholipid molecule into a lysophospholipid, attracting and binding fat and rupturing cell membranes. Phospholipase A2 (PLA2) is a specific type of phospholipase found in snake venom that induces a similar pattern of degenerative events in muscle cells. Snake venom PLA2s have been found to cause rapid necrosis of skeletal muscle fibres, leading to local inflammation and pain.
Fasciculins are toxins found in the venom of mambas and some rattlesnakes that attack cholinergic neurons by destroying acetylcholinesterase (AChE). This causes tetany, or involuntary muscle contraction, which can lead to death.
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Alcohol and medication
Alcohol is a toxin that can cause dehydration, an electrolyte imbalance, and inflammation in the body. Alcohol consumption can also lead to deficiencies in B vitamins, iron, zinc, potassium, and vitamin D, which are essential for converting protein into muscle and repairing muscles. This can result in muscle soreness and weakness.
Alcoholic myopathy is a muscle condition that affects people with alcoholism or binge drinkers. It involves muscle weakness and loss of muscle due to the abnormal breakdown of muscle tissue. The condition can be acute or chronic, with acute cases often occurring after binge drinking and chronic cases resulting from long-term heavy drinking. Symptoms of alcoholic myopathy include muscle pain, weakness, dark urine, cramping, twitching, and a decrease in muscle mass.
Drinking alcohol can also affect the joints, causing pain and discomfort, especially in people with conditions such as gout or osteoarthritis. Alcohol can trigger a buildup of uric acid in the blood, leading to inflammatory arthritis. Additionally, alcohol can interfere with the absorption of nutrients and disrupt the function of human growth hormone (HGH), which is necessary for building and maintaining muscle.
It is important to note that alcohol can also interact with certain medications. For example, consuming alcohol while taking acetaminophen can increase the risk of liver damage. Nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen may also have an increased risk of causing stomach issues such as ulcers when combined with alcohol.
If you are experiencing muscle soreness and you consume alcohol, it is advisable to speak with a healthcare professional, especially if you are taking any medications. Reducing alcohol consumption or abstaining from alcohol may help alleviate muscle soreness and related issues.
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Strychnine poisoning
Muscle soreness can be caused by poisoning. For example, strychnine poisoning can cause involuntary and painful skeletal muscle contractions.
The level of strychnine poisoning depends on the amount and route of exposure, as well as the person's health at the time of exposure. Symptoms of poisoning usually appear within 15 to 60 minutes after swallowing strychnine, with muscle spasms beginning within 10 to 20 minutes. The spasms start with the head and neck, progressing to all muscles in the body, and worsen with the slightest stimulus. Other signs and symptoms of strychnine poisoning include seizures, a "sawhorse" stance, and opisthotonus (rigid extension of all four limbs). Death is often secondary to respiratory paralysis.
Treatment for strychnine poisoning involves aggressive management, including early control of muscle spasms, intubation for loss of airway control, toxin removal, intravenous hydration, and potentially active cooling efforts. There is no antidote for strychnine poisoning, but oral administration of activated charcoal can help adsorb strychnine within the digestive tract. However, activated charcoal is considered dangerous for patients with compromised airways or altered mental states, and it may only be effective within a limited time frame after ingestion. Other treatment options focus on controlling the convulsions that arise from strychnine poisoning, using anticonvulsants, muscle relaxants, and quiet, darkened environments.
If a person survives the initial harmful effects of strychnine poisoning, long-term health effects are unlikely. However, in some cases, there may be brain damage from low oxygen or kidney failure.
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Heavy metal poisoning
Heavy metals bind to parts of cells that are essential to keeping organs functioning. This prevents the organs from performing their functions, which causes symptoms that could be life-threatening without treatment. The symptoms of heavy metal poisoning vary for each type of metal and range in severity based on the level of exposure. Some symptoms include abdominal pain, chills, dehydration, nausea, vomiting, weakness, numbness or prickly sensations in the hands and feet, and severe symptoms such as arrhythmia, brain damage, memory loss, difficulty breathing, kidney damage, liver damage, and miscarriage.
Children are at a higher risk of heavy metal poisoning because their bodies are still developing and more sensitive to the harmful effects of heavy metals. Exposure to heavy metals can be dangerous, and while true heavy metal poisoning is rare, it is important to seek medical attention if exposed to heavy metals. Tests for heavy metals include blood tests, urine tests, and X-rays, and treatment options may include chelation.
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Mercury poisoning
Elemental mercury is found in glass thermometers, electrical switches, fluorescent lightbulbs, and dental fillings. Inhalation of elemental mercury can cause immediate symptoms, including trouble breathing, a metallic taste in the mouth, nausea, vomiting, bleeding or swollen gums, and a burning sensation in the throat or stomach. Inhalation of high concentrations of elemental mercury can lead to a wide range of cognitive, personality, sensory, and motor disturbances.
Inorganic mercury is found in batteries, certain disinfectants, and chemistry labs. Swallowing inorganic mercury is poisonous and can lead to kidney damage. Organic mercury is present in coal fumes, fish that have consumed methylmercury, and older antiseptics. Long-term exposure to organic mercury can cause numbness or dull pain in various body parts.
Symptoms of mercury poisoning include muscle weakness, poor coordination, numbness in the hands and feet, skin rashes, anxiety, memory problems, trouble speaking, hearing difficulties, and vision problems. High-level exposure to methylmercury is known as Minamata disease, which can cause pink and peeling skin in children, a condition called acrodynia or pink disease. Mercury poisoning can also lead to long-term complications, such as kidney problems, decreased intelligence, nerve damage, and reproductive issues.
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Frequently asked questions
Yes, poisons such as strychnine, cholesterol-lowering drugs, alcohol, and snake venom can cause muscle soreness.
Symptoms of strychnine poisoning include muscle stiffness, convulsions, seizures, muscle spasms, muscle pain and soreness, and difficulty breathing.
Treatments for strychnine poisoning include activated charcoal, gastric lavage, muscle relaxants, and anticonvulsants.
Snake venom poisoning often involves multiple organ systems and can cause severe muscle weakness and rapid muscle fiber necrosis.
Overexposure to manganese, mercury, and tin may cause muscle spasms, tremors, and peripheral nerve damage.











































