TASK DEFINITION: In this task you are given a medical question pair hand-generated. Your task is to classify a given post into two categories 1) 'Similar' if the given two questions have a same connotation 2) 'Dissimilar' if the given two questions have a different connotation or meaning.
PROBLEM: Sentence1: How can I know if I have a varicose vein or a blood blister? 
 Sentence2: How can I know if I have a varicose vein or if it is a foot blister? Can you help me?

SOLUTION: Similar

PROBLEM: Sentence1: How can you tell the difference between hemmorhoids and colon cancer? Even though the symptoms are very similar, what are the major differences? 
 Sentence2: I have been noticing blood in my stools for the past 3-4 days. How can I tell if I have hemorhoids or colon cancer? 

SOLUTION: Similar

PROBLEM: Sentence1: How to treat razor scar from shaving? 
 Sentence2: How can I prevent razor scars?

SOLUTION:
Dissimilar