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.

Q: Sentence1: Please provide advice on discontinuing hctz (hydrochlorothiazide) after developing petechiae on my arms. I have been taking hctz (hydrochlorothiazide) for 3 months and this just started. 
 Sentence2: Is hydrochlorthiazide safe for the elderly?

A: Dissimilar
****
Q: Sentence1: I'm 16 weeks pregnant and the skin on left side of my stomach and back is sensitive and extremely painful when touched. But I have no rash. Why? 
 Sentence2: My wife is 16 weeks pregnant, she had a fall and now her left side of stoamch and back is very painful. What should I do? 

A: Dissimilar
****
Q: Sentence1: Is it possible to buy some ilosone (erythromycin estolate) without prescription? 
 Sentence2: Do you think erythromycin estolate can be helpful for my respiratory tract infection?

A:
Dissimilar
****