Hi doctor. Doctor my son is 2 years 5 months. I have 3 concerns regarding him 1. He doesn't talk much. He only says papa, baba, nana, alphabets, numbers 1 to 20. But not regular words like dede, water, very rarely he says or repeat any word. 2. He mostly walk on toes. Whenever i tell him walk properly prishi thn he walks properly but again in sometime he is walking on toes. 3. Most important doctor I feel he is getting very slight darkness under his eyes, very slight. What should I do. Please guide.