Humoral classification of diseases in Siddha system of medicine.

In siddha system of medicine the total number of diseases are said to be 4448, but the subclassification methodology and enumeration differ from one source to another. However, classification of the majority of these diesases is either based on clinical symptoms or vitiation of humor. Futher they have been sub-classified on the basis of the predominent symptoms, affected organs and aetiological factors.