Overview
Manganese poisoning, also called manganism or manganese toxicity, is a condition caused by excessive exposure to the metal manganese. It is not a genetic disease but rather an environmental or occupational illness. Manganese is a naturally occurring element that the body needs in tiny amounts, but when too much builds up in the body — especially in the brain — it can cause serious damage to the nervous system. The condition most commonly affects workers in industries such as mining, welding, steel manufacturing, and battery production, where manganese dust or fumes are inhaled over long periods. It can also occur from contaminated drinking water, certain medications, or in people with liver disease who cannot properly clear manganese from the body. In rare cases, it has been linked to illicit drug use involving manganese-containing compounds. Manganese poisoning primarily damages a part of the brain called the basal ganglia, which controls movement. Early symptoms often include mood changes, irritability, and difficulty sleeping. As the condition progresses, patients may develop tremors, slow movement, stiff muscles, difficulty walking, and problems with balance — symptoms that closely resemble Parkinson's disease. Some people also experience psychiatric symptoms such as hallucinations, aggression, or emotional instability. Treatment focuses on removing the source of manganese exposure and may include chelation therapy to help the body eliminate excess manganese. Unfortunately, some neurological damage may be permanent even after exposure stops.
Also known as:
Key symptoms:
Tremors or shaking of the handsSlow movementMuscle stiffness or rigidityDifficulty walking or unsteady gaitProblems with balanceMood swings and irritabilityDepression or anxietyDifficulty sleepingMemory problemsSlurred or slow speechReduced facial expression (mask-like face)Hallucinations or psychosisFatigue and weaknessDifficulty with fine motor tasks like writingHeadaches
Clinical phenotype terms (30)— hover any for plain English
Sporadic
Usually appears on its own, not inherited from a parent
Adult
Begins in adulthood (age 18 or older)
Treatments
4 availableUrea 39.5% With 2% Salicylic Acid
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Dermacure
Urea is useful for the treatment of damaged, ingrown and devitalized nails
Protopam Chloride
In the treatment of poisoning due to those pesticides and chemicals (e.g., nerve agents) of the organophosphate class which have anticholinesterase activity
Urea Cream 40 Percent
Urea is useful for the treatment of damaged, ingrown and devitalized nails
Clinical Trials
View all trials with filters →No actively recruiting trials found for Manganese poisoning at this time.
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Treatment Centers
8 centersBaylor College of Medicine Rare Disease Center ↗
Baylor College of Medicine
📍 Houston, TX
🏥 NORDStanford Medicine Rare Disease Center ↗
Stanford Medicine
📍 Stanford, CA
🔬 UDNNIH Clinical Center Undiagnosed Diseases Program ↗
National Institutes of Health
📍 Bethesda, MD
🔬 UDNUCLA UDN Clinical Site ↗
UCLA Health
📍 Los Angeles, CA
🔬 UDNBaylor College of Medicine UDN Clinical Site ↗
Baylor College of Medicine
📍 Houston, TX
🔬 UDNHarvard/MGH UDN Clinical Site ↗
Massachusetts General Hospital
📍 Boston, MA
🏥 NORDMayo Clinic Center for Individualized Medicine ↗
Mayo Clinic
📍 Rochester, MN
👤 Mayo Clinic Center for Individualized Medicine
🏥 NORDUCLA Rare Disease Day Program ↗
UCLA Health
📍 Los Angeles, CA
Travel Grants
No travel grants are currently matched to Manganese poisoning.
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Caregiver Resources
NORD Caregiver Resources
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Mental Health Support
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Family & Caregiver Grants
Financial assistance programs specifically for caregivers of rare disease patients.
Social Security Disability
Learn how rare disease patients may qualify for SSDI/SSI benefits.
Questions for your doctor
Bring these to your next appointment
- Q1.What is my current manganese level, and how does it compare to normal?,Has the MRI shown any signs of manganese accumulation in my brain?,Would chelation therapy be appropriate in my case, and what are the risks and benefits?,Are there medications that could help manage my movement symptoms or mood changes?,What physical therapy or rehabilitation programs would you recommend?,Is the damage I already have likely to be permanent, or could some symptoms improve over time?,How can I make sure my family members or coworkers are not also being exposed?
Common questions about Manganese poisoning
What is Manganese poisoning?
Manganese poisoning, also called manganism or manganese toxicity, is a condition caused by excessive exposure to the metal manganese. It is not a genetic disease but rather an environmental or occupational illness. Manganese is a naturally occurring element that the body needs in tiny amounts, but when too much builds up in the body — especially in the brain — it can cause serious damage to the nervous system. The condition most commonly affects workers in industries such as mining, welding, steel manufacturing, and battery production, where manganese dust or fumes are inhaled over long perio
How is Manganese poisoning inherited?
Manganese poisoning follows a sporadic inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.
At what age does Manganese poisoning typically begin?
Typical onset of Manganese poisoning is adult. Age of onset can vary across affected individuals.
Which specialists treat Manganese poisoning?
4 specialists and care centers treating Manganese poisoning are listed on UniteRare, sourced from ClinicalTrials.gov principal investigators, published research, and the NPPES NPI registry.