The rheumatology examines particularly the diseases related to the muscle skeleteon system. However, the rheumatic diseases are not limited with the muscle skeleton system since other organs and systems of the body may be influenced. Thus, rheumatology is a multisystemic diseases branch. The word “rheuma” is used to define the flowing and inflammatory liquids in the first century AC.   
The rheumatic diseases defines the conditions which influence the heart, bones, joints, skin and lungs. There are more than 200 rheumatic diseases in total. We listed the most common ones below: 
Rheumatoid arthritis 
Ankylosing spondylitis 
Cutaneous arthritis 
Reactive arthritis 
Entereopathic arthritis 
Systemic lupus erythematous 

Sjögren sydrome 
Antiphospholipid antibodies syndrome 
Behçet disease 
Familial Mediterranian Fever 
Gout and fake gout 
Polymyalgia rheumatica 

Relapsing polychondritis 

Septic arthritis 

Acute joint rheumatism 
Adult Still disease 
Temporal arthritis 
Takayasu arthritis 
Polyarthritis nodosa (classic PAN) 

Henoch-Schönlein purpura

Microscopic polyangitis (microscopic PAN) 
Granulomatous polyangitis (Wegener granulomatousis)
Churg Strauss  syndrome 
Essential cryoglobulinemic vasculitis 
Leucocytoclastic vasculitis