Wednesday 16 July 2003
A disease has a known specific cause or causes (called its etiology).
It differs from a syndrome, which is a collection of signs or symptoms that occur together. However, for historical reasons, many conditions have been identified, yet continue to be referred to as "syndromes". Furthermore, numerous conditions of unknown etiology are referred to as "diseases" in many contexts.
classification of diseases (nosology)
causes of diseases (etiology)
communicable diseases (infectious diseases)
noncommunicable diseases (non-communicable diseases)
localized diseases (diseases of a structure)
- diseases of systems
- diseases of organs
- diseases of tissues (tissular pathology)
- diseases of cells (cellular pathology)
- diseases of cellular organelles (cellular pathology)
- diseases of molecules (molecular pathology)
Reich DE, Lander ES. On the allelic spectrum of human disease. Trends Genet. 2001 Sep;17(9):502-10. PMID: 11525833