My son (3yr old) is facing stammering issue (repeating the first letter of the word 4-5 times while speaking) sometimes but not regularly. He was speaking very good till February and then this problem started. After 15-20 days this will become normal. The main reasons for this issue we have observed are eating cold items like ice cream, juices etc, sleeping with AC ON, eating sugar items like chocobars etc. Please suggest if we need to worry about this as many are saying that this is common due to cool items and weather changes. If doctor consultation is required, pls suggest best doctor in Hyderabad.