HELP! Skin problem?

[Rixon]

i tried for some time to find out what could be causing black patches on grimlocks skin and even on the very top of his sail on his back.

heres a couple of pictures, i hope you shed some light on what causes this and how i can reslove it.

 

[zelink14]

Try adding the pictures again so people can see.

Edit: Nevermind, it didn't load for me at first.

 

[Brad Ramsey]

How close can he get to a basking bulb (if you are using one)?
What are the temperatures (ambient and at the top of the enclosure)?
Are you using a compact fluorescent bulb?
What is the relative humidity in the enclosure?

-Brad