instruction:
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: Symmetrical legs & feet; numb, weak & tingly. Painful to walk @rest, both feet throb til they both go "numb". Is this due to my chronic back pain? 
 Sentence2: I have chronic back pain. Recently I started experiencing numbness, weakness and tingling sensation on both legs and feet, that hurt on walking. At rest, my legs and feet throb until numbness sets in. Is this due to my back ache?
answer:
Similar


question:
Sentence1: I stepped on a rock that injured the outside of my foot.  17 days later, swelling and bruising down. Discomfort still. Will walking hurt the healing? 
 Sentence2: It's been almost 2 and half weeks since I bumped into a rock and injured my foot, though the swelling is down bit it still hurts, is it a fracture, am I okay to walk or should I avoid weight bearing?
answer:
Similar


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 think I have OCD that gets triggered when I see my girlfriend. How can I treat this?
answer:

Dissimilar