The causes of<unk>  can be divided into idiopathic and non-idiopathic ones. There are many diseases and medications that can cause<unk>  but it also may be spontaneous. Usually<unk>  is not dangerous but in some cases it can become life threatening. Trauma is the most common cause of<unk> .
Epistaxis causes
Thrombosis causes
Anaphylaxis causes
Volvulus causes
Hematochezia causes
Upper gastrointestinal bleeding causes
Gastrointestinal perforation causes
Pancreatitis causes