Is it appropriate to tell someone you don't know well that they may have a serious medical condition?

You casually are talking to people at a party. You have a serious disease (genetic) and are aware of the symptoms. As you are talking to someone at this party, a casual person and you strike up a conversation. They start telling you they are not well and they tell you their symptoms. Their symptoms sound... show more You casually are talking to people at a party. You have a serious disease (genetic) and are aware of the symptoms. As you are talking to someone at this party, a casual person and you strike up a conversation. They start telling you they are not well and they tell you their symptoms. Their symptoms sound exactly like the issues you have faced. Do you tell them what you think it might be? Or will that scare them too much since you don't know them well?
Update: im shocked by all these answers! your information could save their life. why wouldn't you tell them? if you people are afraid of what they will say then you let your fear then THAT is more important than saving someone's life? WOW PEOPLE....fear trumps helping someone I guess. SHOCKED
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