Final answer:
Yuri suffers from a phobia, which is an anxiety disorder characterized by an excessive and persistent fear of specific objects or situations, such as heights in this case.
Step-by-step explanation:
Yuri experiences excessive, distressing, and persistent fear or anxiety about heights. Based on the symptoms described, Yuri suffers from a phobia. A phobia is a type of anxiety disorder characterized by an intense, irrational fear of specific objects, activities, or situations.
This is distinct from mood disorders, obsessive-compulsive disorder (OCD), and psychosis, which present with different symptoms and features. While occasional feelings of anxiety are a normal part of life, a phobia like the one Yuri is experiencing is marked by fear and worry lasting for an extended period, often leading to avoidance behaviors and significant distress.