Abnormal platelet count and/or coagulation
Septicemia
Idiopathic thrombocytopenic<unk>  (ITP)
Hemolytic uremic syndrome
Leukemia
Coagulopathies (e.g. hemophilia)
Henoch-Schonlein<unk>  (HSP)
Acute hemorrhagic edema of infancy (AHEI)
Hypersensitivity vasculitis
Primary vasculitides
Wegener's
Microscopic polyangiitis
Eosinophilic granulomatosis with polyangiitis (Churg-Strauss syndrome)
Secondary vasculitides
Henoch-Schonlein<unk> 
Connective tissue disorder
Systemic lupus erythematosus
Scurvy
Infectious disease
Hepatitis B
Hepatitis C
Trauma
Septicemia
Idiopathic thrombocytopenic<unk>  (ITP)
Hemolytic uremic syndrome
Leukemia
Coagulopathies (e.g. hemophilia)
Henoch-Schonlein<unk>  (HSP)
Acute hemorrhagic edema of infancy (AHEI)
Wegener's
Microscopic polyangiitis
Eosinophilic granulomatosis with polyangiitis (Churg-Strauss syndrome)
Henoch-Schonlein<unk> 
Connective tissue disorder
Systemic lupus erythematosus
Scurvy
Infectious disease
Hepatitis B
Hepatitis C
Systemic lupus erythematosus
Hepatitis B
Hepatitis C
Febrile, toxic
Palpable
Meningococcemia
Disseminated gonococcal infection
Endocarditis
Rocky mountain spotted fever
HSP
Non-palpable<unk>  fulminans
DIC
TTP
Afebrile, nontoxic
Palpable
Autoimmune vasculitis
Non-palpable
ITP
Palpable
Meningococcemia
Disseminated gonococcal infection
Endocarditis
Rocky mountain spotted fever
HSP
Non-palpable<unk>  fulminans
DIC
TTP
Meningococcemia
Disseminated gonococcal infection
Endocarditis
Rocky mountain spotted fever
HSP<unk>  fulminans
DIC
TTP
Palpable
Autoimmune vasculitis
Non-palpable
ITP
Autoimmune vasculitis
ITP
Purpura
Abnormal platelet count and/or coagulation
Seabather's eruption
Septicemia
Black hairy tongue
Idiopathic thrombocytopenic purpura 
Paronychia
Hemolytic uremic syndrome