Hi Dr. Laura,
I have an adorable eighteen-month-old boy. A month ago I had my second little boy. My eighteen-month-old has always had the sweetest most easy going temperament. He was so fun loving and easy to take care of. After the baby was born he had no negative reactions.
Now, a month later, he has undergone a complete personality change. He is cranky most of the day and just spends a lot of time whining and crying.
Interestingly enough, he seems to like the baby. He likes to look at him and hold him.