Will hair grow back after stitches on Scalp?

Whether the hair will grow depends upon what was done during the procedure. Quite often, hair loss around an incision is temporary due to "shock" to the hair follicles. However, if the follicles were injured during the procedure, sometimes the hair will not grow back. Most often the hair will grow back within several months. I hope this information is helpful.Stephen Weber MD, FACS
Lone Tree Facial Plastic Surgeon

You may develop traumatic alopecia and this should be treated in the early phase of wound healing with topicals.  Hair transplants may also be needed.

It is not unusual to have some hair loss when an incision is made on the scalp.  It is possible that some of the hair follicles were destroyed during your procedure, but in most cases, the hair should grow back.  It can take 3-4 months from the time of the wound to when the hair would begin growing back, so I would just give it a little more time since it's only been about a month since your stitches were placed.  

Sometimes the area of normal hair growth is traumatized from the injury or the follicles go into shock. In addition the scar can spread.  Time will tell.