Q. A 3-year-old boy is brought to the ER by his parents because of an episode of jerky movement that lasted 3 minutes 30 minutes ago. He has a history of developmental delay as he could not walk until the age of 18 months. His vital signs are normal. On clinical examination, he has a pink patch on the right half of his face which is present since birth according to his parents. What is the most likely diagnosis?