when voldemort sees in his thoughts
Yes, look at my hands.
The Avada kedavra curse left harry potter with the scar on his head
a lightning bolt
It didn't. In the book said last time Harry's scar hurt was 19 years ago, when Voldemort died. In the movie, you have nothing that indicates that his scar was hurting.
He got it when he was an infant, by Lord Voldemort, when Lord Voldemort killed harry Potter's parents and tried to kill Harry potter but couldn't. Only left a scar on his forehead. Watch the movie.
It begins to burn and itch and sometimes Harry starts to see things that Voldemort is doing.
No. Harry says his scar hadn't pained him for nineteen years, which he when he killed Voldemort.
Lord Voldemort was sharing his body with Professor Quirrell, resulting in Harry's scar hurting.J.K. Rowling revealed that Harry's scar hurt whenever he was near Lord Voldemort because the Horcrux inside him was trying to leave Harry and return to Voldemort.
No, but it doesn't hurt any more.
Beacause when he senses danger it hurts
It didn't hurt because he looked at Snape. Professor Quirrel was right next to Snape, and it was Quirrel that made Harry's scar hurt because he was sharing his body with Voldemort. His scar hurt because the Horcrux inside Harry could sense Voldemort and was attempting to leave Harry's body.
Harry's lightning scar is located on his forehead.