7 days post hair transplant - crack-like thing in my recipient area has appeared - normal? (photo)

If you are having issues after surgery, especially with "cracks" you should contact your doctor.  It probably means you are not washing your hair well enough.

It looks like the areas that appear as "cracks" are linear areas without grafts that contrast against the crusts of grafted areas.I would follow up with your surgeon for evaluation.

I would certainly contact your hair restoration clinic and hair transplant surgeon for a follow up. 

What you are seeing is terrible post operative washing. You should have washed off all of the crusts on the day and the day following the surgery. When this is done correctly, within 3 days of surgery, you can resume full activities, heavy exercises if you wish. The recipient area requires daily washes as well to keep the recipient area free of crusts. I generally recommend the use of a sponge and supply my patient with a surgical sponge to fill with soapy water and press on the recipient area daily. By repeating this daily, all crusts can be washed off without any fear of losing grafts. IF any crust are present, use  a Q tip and dip it into soapy water, and roll it on the crusts and that will lift them off without dislodging them, but never rub them, just roll the Q tip on the recipient crust. I like to see no evidence of any crusting in the recipient area and the crusts from the donor area gone in 7-10 days with daily washing