Originally Posted by J_9
Let's differentiate between postpartum blues and postpartum depression, they are two totally different animals. Postpartum blues, most commonly known as the baby blues is very common, it sounds as though your wife may be going through this. It is caused by the immediate decrease in hormones combined with the added responsibility of baby and exhaustion.
Postpartum depression, on the other hand, is much more rare. It is when the mother is severely depressed and has thoughts, or acts out, harmful situations on her, other loved ones, or the baby. Many women with postpartum depression will either attempt suicide or harm the baby.
Is your wife getting enough rest? By this I mean is she sleeping when the baby sleeps? This is important for her mental and physical well being. I do think it is a good idea that she speak to her doctor about this. It may be necessary for her to get on short term medication until her hormones even out.