Other possible factors
This section presents topics discussed or studied in relation to ALS. They should not be interpreted as proven causes or treatments.
Lyme disease
Lyme disease is a bacterial infection caused by Borrelia species. In some people it can involve the nervous system (neuroborreliosis). Certain symptoms may overlap with neurological disease, so testing may be considered when exposure history and clinical signs support it.
Co-infections
Babesia
A tick-borne parasite that may cause fever, fatigue, sweats and anemia-like symptoms.
Bartonella
Can cause a wide range of symptoms depending on the species and clinical context.
Anaplasma and Ehrlichia
Tick-borne infections that may cause systemic illness and require medical diagnosis and treatment.
Heavy metals
Mercury, lead, arsenic and cadmium exposure can affect health and the nervous system. Their role in ALS remains a research topic, and exposure assessment should be done with appropriate medical testing.
Mold and mycotoxins
Damp buildings and mold can affect health, especially respiratory and allergic conditions. Possible neurological effects are discussed, but evidence does not establish mold as a proven cause of ALS.
Clinical cases
Stories such as Dr. David Martz and Diana Cottrell are often discussed in Lyme disease communities. They are individual cases or personal accounts and should be presented separately from established evidence.