Ghent Criteria High Quality -

If a parent has Marfan syndrome, their child has a 50% chance of inheriting it. In these cases, the diagnosis is easier:

The Ghent Criteria are not meant to be a DIY quiz at home. If you score a "6" on the systemic score, you don't have Marfan syndrome. If you have long fingers but a normal heart and eyes, you likely just have "Marfanoid habitus" (tall stature) without the syndrome.