Given the task definition, example input & output, solve the new input case.
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.
Example: I had been suffering from cardiovascular disorder.
Output: cardiovascular disorder
Here, the person mentions this disorder which is related to heart issues.

New input case for you:  Systemic side effects including piloerection , headache , and cold extremities were experienced in all subjects .
Output:
headache