hi..thanks for your query.
The rate at which the skiing should have healed also depends on the depth of the injury
i.e the scratch that you mention and whether there was any superimposed bacterial infection
on it.If the scratch was superficial, I do not see any reason why it should heal so slow.But if it was deep, has a prolonged healing time,you should consult a dermatologist
about the same.Some people have this genetic tendency to form Hypertrophic scars or Keloids
, so that might be the case.
Hope this helps..tAKE CARE!