Dear Doctor Rassman,
I live in Turkey.I had a hair transplant about six months a go. 2900-3000 grafts were planted on my head (mostly on middle and vertex area, some in the front). The planted hair on the front and middle area of my head has grown not so badly,and now (after six months) the front and middle areas appearance is not bad. But, my vertex area is still empty. The interesting fact is that the planted hair in the vertex area had been seen to grow satisfactorily until the fifth month after transplantation. But, between the fifth and sixth months most of the planted hair on the vertex area has fallen out. Is it normal that after six months the planted hair has fallen out? My doctor could not make me a satisfactory explanation and advised to wait more. I am depressed.
Once the hair transplants grow, they should not fall out. Are you sure that they were growing at some point and not just stubble from the original procedure?
The vertex of the head is a big area and many times the amount of hair put into the vertex is dwarfed by the size of the area. Transplants placed into the front and top will layer, such that coverage is easier to achieve. The vertex (crown) has a change in hair direction so layering is not easily accomplished. Be sure that what you are looking at is now just the effects of the swirl and the large area, but try to have the actual hairs counted.
As you are only 6 months out of the surgery, I would wait another 3 months before reacting too much to it.