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: I need to know if there is more than one type of achondroplasia? 
 Sentence2: What are some causes of achondroplasia?

SOLUTION: Dissimilar

PROBLEM: Sentence1: When I watch my girlfriend bad words/insults come to my mind and I have to replace them with good ones. There is often words in my mind.Can it be OCD? 
 Sentence2: I feel hatred towards my girlfriend when I see her and can think of abusive words, which I consciously replace with good ones. Is this a symptom of an OCD?

SOLUTION: Similar

PROBLEM: Sentence1: Why does my back hurt when I breathe or bend over? Its kind of in my upper middle back but just on the right side. 
 Sentence2: I started noticing pain in the upper middle back on the right side and hurts to breathe and bend over. Any idea what it could be?

SOLUTION:
Similar