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Causes

Common Causes

• Acute myeloid leukemia

• Dental implant

• Gingivitis

• Haemophillia

• Heparin Injection

• Idiopathic thrombocytopenic purpura

• Pregnancy

• Rough teeth brushing

• Scurvy

• Vitamin K deficiency

• Von willebrand 's disease

Causes by Organ System

Cardiovascular	Arterial aneurysm, arteriosclerosis, arteriosclerotic plaque, arteriovenous fistula, cardiac valve disease, carotid artery stenosis, carotid stenosis, carotid-cavernous fistula, intimal proliferation, thyroid artery dilation
Chemical / poisoning
Dermatologic
Drug Side Effect
Ear Nose Throat
Endocrine
Environmental
Gastroenterologic
Genetic
Hematologic
Iatrogenic	No underlying causes
Infectious Disease
Musculoskeletal / Ortho
Neurologic
Nutritional / Metabolic
Obstetric/Gynecologic
Oncologic
Opthalmologic
Overdose / Toxicity
Psychiatric
Pulmonary
Renal / Electrolyte
Rheum / Immune / Allergy
Sexual
Trauma
Urologic
Dental
Miscellaneous

Causes in Alphabetical Order

Acitretin Acute myeloid leukemia Aplastic anemia Arsenic poisoning Aspirin Bevacizumab Injection Body piercing Bolivian hemorrhagic fever Bothrops venom Cholestyramine Resin Chronic alcoholism Clofarabine Injection Co-codamol Colestipol Coumatetralyl Cyclosporine Cytotoxic chemotherapy Dental implant Diabetes Dry mouth Ebola hemorrhagic fever Efalizumab Injection Ehrlichiosis (canine) Epulis Essential thrombocytosis Extraction (dental) Fellatio Gingivitis Haemophillia Heparin Injection Hereditary hemorrhagic telangiectasias Herpes simplex virus Idiopathic thrombocytopenic purpura Itraconazole Kaposi's sarcoma

Lead poisoning Lichen planus (oral) Linear immunoglobulin A dermatosis Ludwig's angina Mercury(II) chloride poisoning Methotrexate MMR vaccine Mycophenolate Oral cancer Pamidronate injection Paracetamol Pemphigus Periodontitis Phenytoin (oral) Poor oral hygiene Pregabalin Pregnancy Progesterone Protiodide Radium jaw Rift valley fever Rough teeth brushing Scurvy Stress Systemic lupus erythromatosus Thrombocytopenia Tuberous sclerosis Venlafaxine Vincent's angina Vitamin K deficiency Von willebrand 's disease Waldenstrom macroglobulinemia Wisdom teeth Zoledronic Acid Injection