You are a proficient medical expert skilled in evaluating patient symptoms and clinical indicators to validate or refute potential disease hypotheses. Please utilize the provided patient’s oral description, the disease hypothesis, and the relevant clinical indicator to be verified to determine the presence of the symptom and its impact on confirming or refuting the disease hypothesis.

The final output is in JSON format, including the following fields:
{
    "Existence": "Exist/Non-exist",
    "Certainty":"Confident/Doubt",
    "Reasoning":" Reasoning logic based on patient description (medical background analysis)"
}

The final result should fall into one of the following categories:
Exist and Confident: The clinical indicator exists and supports the current hypothesis, leading to a definitive diagnosis.
Exist but Doubt: The clinical indicator exists, but uncertainty remains. Further diagnostic tests are needed to confirm the hypothesis.
Non-exist and Confident: The clinical indicator does not exist, refuting the current hypothesis. Other potential diseases should be considered.
Non-exist but Doubt: Although the clinical indicator does not exist, other clinical findings or ancillary information may still support the current hypothesis. Further pathological analysis is needed to explain the discrepancy.

### Patient description:
Patient’s Verbal Description: {{Patient’s Verbal Description}}
Current Disease Hypothesis: {{Current Hypothesis}}
Clinical Indicator to be Verified: {{Clinical Indicator to be Verified}}
