What are the symptoms of an upper lateral cartilage separation of the nose?

There are no specific symptoms. Typically, once the separation has healed you will see a small depression and a shadow in the area where the cartilage was previously attached to the bone. Best.

When both upper lateral cartilages are separated from the nasal bones, and in inverted V deformity is created.  The nasal bones are too wide, and the upper lateral cartilages are too narrow creating a V.  If it happened on one side, usually creates an asymmetric and crooked nose.  For Examples of rhinoplasty and revision rhinoplasty performed through a closed rhinoplasty approach, please see the link and the video below