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: Dry, flaky skin on the outer skin of lips all the time. Why does this happen? 
 Sentence2: I have dry, chaped lips with a cold sore. How long does it take to heal?

SOLUTION: Dissimilar

PROBLEM: Sentence1: 16, never had intercourse, no STDs known, vaginal irritation, sometimes pain, not much pain with urination, irritation through the entire day. 
 Sentence2: I am a virgin and never had an intercourse. Can I get STDS?

SOLUTION: Dissimilar

PROBLEM: Sentence1: Could anybody get neurapothy in forearms and hands? 
 Sentence2: What are the causes of neuropathy?

SOLUTION:
Dissimilar