Abnormal platelet count and/or coagulation
Septicemia
Idiopathic thrombocytopenic purpura (ITP)
Hemolytic uremic syndrome
Leukemia
Coagulopathies (e.g. hemophilia)
Henoch-Schonlein Purpura (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 purpura
Connective tissue disorder
Systemic lupus erythematosus<unk> 
Infectious disease
Hepatitis B
Hepatitis C
Trauma
Septicemia
Idiopathic thrombocytopenic purpura (ITP)
Hemolytic uremic syndrome
Leukemia
Coagulopathies (e.g. hemophilia)
Henoch-Schonlein Purpura (HSP)
Acute hemorrhagic edema of infancy (AHEI)
Wegener's
Microscopic polyangiitis
Eosinophilic granulomatosis with polyangiitis (Churg-Strauss syndrome)
Henoch-Schonlein purpura
Connective tissue disorder
Systemic lupus erythematosus<unk> 
Infectious disease
Hepatitis B
Hepatitis C
Systemic lupus erythematosus
Hepatitis B
Hepatitis C
Dental fracture
Dental subluxation
Dental avulsion
Bleeding dental socket
Acute alveolar osteitis (dry socket)
Acute necrotizing ulcerative gingivitis (trench mouth)
Dental abscess
Periapical abscess
Periodontal abscess
Ludwig's angina
Pulpitis (dental caries)
Pericoronitis
Peritonsillar abscess (PTA)
Retropharyngeal abscess
Vincent's angina - tonsillitis and pharyngitis
Periapical abscess
Periodontal abscess<unk> 
Gingival hyperplasia
Phenytoin
Cyclosporine
Nifedipine, Amlodipine
Leukemia
Phenytoin
Cyclosporine
Nifedipine, Amlodipine
Leukemia
Vitamin A deficiency
Vitamin B deficiencies
Vitamin B1 deficiency (Thiamine)
Beriberi
Wernicke-Korsakoff syndrome
Vitamin B3 deficiency (Pellagra)
Vitamin B9 deficiency (Folate)
Vitamin B7 deficiency (Biotin)
Vitamin B12 deficiency
Vitamin C deficiency<unk> 
Vitamin D deficiency (Rickets)
Vitamin E deficiency
Vitamin K deficiency
Vitamin B1 deficiency (Thiamine)
Beriberi
Wernicke-Korsakoff syndrome
Vitamin B3 deficiency (Pellagra)
Vitamin B9 deficiency (Folate)
Vitamin B7 deficiency (Biotin)
Vitamin B12 deficiency
Beriberi
Wernicke-Korsakoff syndrome
Scurvy
Abnormal platelet count and/or coagulation
Rickets
Septicemia
Porphyria
Idiopathic thrombocytopenic purpura 
Bandemia
Hemolytic uremic syndrome