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.
--------
Question: Sentence1: What does it mean to have sporadic headaches? 
 Sentence2: I have tension headaches and have been under lot of stress. What do you recommend i do?

Answer: Dissimilar


Question: 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?

Answer: Similar


Question: Sentence1: What can cause ssri shock-like sensations if you been off an ssri for 45 days? 
 Sentence2: I have had depression for long and I am on SSRI. Is there any other susbstiute for SSRI to help with depression and anxiety? 

Answer:
Dissimilar