can be broadly classified into the following groups:-
a) associated with infections for example rheumatic
b) degeneration of joints, often with age and
excess body weight for example osteo-arthritis
c) non-infective forms of inflammatory arthritis,
often deforming for example rheumatoid arthritis.
d) multiple systemic types (affecting lungs, heart,
etc) for example lupus (SLE)
e) Metabolic & miscellaneous causes for example
gout, traumatic arthritis.