Detailed Instructions: In this task, you will be given a single sentence or a set of sentences. You have to recognize the name of the disorder or disease. Disease is a disorder of structure or function in a human, animal, or plant, especially one that produces specific symptoms or that affects a specific location and is not simply a direct result of physical injury. Although there might be several correct answers, you need to write one of them.
See one example below:
Problem: I had been suffering from cardiovascular disorder.
Solution: cardiovascular disorder
Explanation: Here, the person mentions this disorder which is related to heart issues.

Problem:  Downbeat nystagmus associated with intravenous patient - controlled administration of morphine .
Solution:
Downbeat nystagmus