What's wrong with my iguana??

[reptile_lover07]

i have always been told that if a lizard sits under the heat lamps and basks all day long, the hot spot isn't hot enough. check that spot again.

It ranges from about 89-91 degrees

Do they look dry or different in texture then the other scales? If they do, it could be a bacterial issue which he'll need antibiotics for.

Nope. They look and feel normal. Just brownish.. The last few days its just stayed brown. I got him a vet appointment in April but I'm wondering if I can do anything for him until then.