The full form of NCL disease is Neuronal Ceroid Lipofuscinoses.
NCL refers to a group of rare, inherited disorders that affect the nerve cells. As mentioned in the provided reference, Neuronal ceroid lipofuscinoses (NCL) refers to a group of rare disorders of the nerve cells. NCL is passed down through families (inherited). These are the three main types of NCL: Adult (Kufs or Parry disease).