most likely noo

Croc's is an Over-exagerated version of a Real skin disease... That has some fancy name I Forgot about.

Anybody know what the fancy name for the disease is?

Harlequin ichthyosis?

 
DO NOT TYPE THAT INTO GOOGLE by the way if you are easily squeamish.    Ya'll can't say I didn't warn you if you do look at it.

Here's what the Wikipedia page has to say about his skin: 
 

 Killer Croc's backstory explains that he was born with a condition resembling epidermolytic hyperkeratosis, a disfiguring skin disorder. However, it is actually a form of regressive atavism, meaning that he has inherited traits of ancestral species of the human race, such as reptiles. This condition has been augmented by the presence of ametagene. Consequently, he has several extraordinary physical abilities relating to his endurance, strength, and speed.  

@Crom-Cruach: i know, but one wouldn't end up like killer croc