Diseases caused by archaea?
Archaea are a group of single-celled microorganisms. There are no cases of confirmed diseases having been caused by archaea, yet this does not mean that they are not capable of causing disease.
Diseases caused by pathogens are often contagious and include things such as Meningitis, Influenza and Tuberculosis. Diseases not caused by pathogens are generally things which go wrong in the body. For example, Cancer, Multiple Sclerosis and Motor Neurone Disease are all diseases not caused by pathogens.