Connective tissue disorders
- Systemic lupus erythematosus
- Rheumatoid arthritis
- Systemic sclerosis (Scleroderma)
- Dermatomyositis
- Polymyositis
- Mixed connective tissue disease
- Sjogren's syndrome
- Polymyalgia rheumatica
- Giant cell arteritis
- Granulomatosis with polyangiitis (Wegener's granulomatosis)
- Microscopic polyangiitis
- Eosinophilic granulomatosis with polyangiitis (Churg-Strauss syndrome)
- Goodpasture syndrome
- Antiphospholipid syndrome
- Behcet's disease
- Relapsing polychondritis
- Cryoglobulinemia
- Urticarial vasculitis