Is there one or two characteristic "odd" or "unusual" symptom or clinical feature of Alagille syndrome?
The facial features of people with Alagille syndrome are highly characteristic. Doctors trained to see these differences can frequently be concerned about Alagille syndrome based on a patient's facial features and can confirm their idea by asking other medical questions. Typically, people with Alagille syndrome will have a large forehead, eyes that sit deeper in their heads, a pointed chin, and a bigger tip of the nose. If these features are seen in combination with liver disease or heart problems, Alagille syndrome would be highly suspected.