Could rubbing grafts 17 days post-FUE cause any damage? (Photo)

It is best to contact your doctor about post operative care and instructions since each doctor has a different regimen.  Rubbing at this point should not be an issue.

Gentle rubbing with shampoo in the shower should not cause any issues, but squeezing, scratching, picking etc... should be avoided.  

By 17 days the grafts are completely incorporated into the scalp and therefore rubbing will not cause any injury.

At 17 days following your procedure, the grafts are permanently in place and will not be dislodged.  Rubbing your scabs gently to allow them to come off at this point is fine and should not damage them. 

If there are crusts still present, you run risks rubbing the grafts.  I generally tell my patients to leave the recipient area alone as rubbing and touching it can, on occasion, cause infections called folliculitis