Curaçao Criteria for clinical diagnosis of hereditary haemorrhagic telangiectasia (HHT)
| Criteria | Description |
| Epistaxis | Spontaneous and recurrent |
| Telangiectases | Multiple, at characteristic sites: lips, oral cavity, fingers, nose |
| Visceral lesions | Gastrointestinal telangiectasia, pulmonary, hepatic, cerebral or spinal arteriovenous malformations |
| Family history | A first-degree relative with HHT according to these criteria |