there can be Side effects from having a hair replacement transplant.

Some times the body experiences a shock from the newly relocated hair. and since you are relocating hundreds of hairs and hair follicles there is a chance that some of the hairs will not funny transfer.

Also since  a hair transplant is a superficial operation there may be a change of an infection just like any other operation or sugary

Itching of the hair and scalp is normal but because and not to scratch it because you could cause scaring and break scabs and then loose the hair that you just transferred.

Look for the special shampoo that your doctor recommends and then use it religious so you can relieve Any itching you have and give the hair transplant surgery the best chance for successful hair replacement