It could be gigantism or acromegaly. A catch-all term for these diseases (and others like them) is Overgrowth syndrome.
The disease that causes bones to become weak is called "Osteoporosis".
Osteoporosis is the most common one, but there are others.
A disease causing organism is called a pathogen.
Its called "pathogen".
it is called malaria
A microorganism is called a "pathogen".
The name of the disease or illness that bacilli bacteria causes is called anthrax. This causes diarrhea, vomiting, and abdominal cramping.
leukemia
the sleeping disease is transmited by the tse tse fly
Bartonella quintana can cause a disease called trench fever.
Graves' Disease.
Pathogenic bacteria.