Sign: Is something that you can see (for example, dilated pupils or bleeding).
Symptom: Something a person feels (for example: nausea or headache).
Note: I assume you means signs and symptoms in...
There are no signs or symptoms for SIDS. As sad and unfair that is it is true. I speak from experience. There are only things you can do that will "maybe" decrease the chances of this happening to...
The most famous early sign is torturing small animals or peers. Physical torture. Big red flag. Additionally, lack of regret for bad actions (which most children display very clearly); but this is...