Hi Lisa,
You have three now - congratulations! I am going to answer you here so all members are able to participate .
You take really good care of your frogs, he is in good hands.

He is thin- so I'm glad to hear ( via PM) that he is eating well-- thank goodness as this , you know, is a good sign.
It is very difficult to tell what these marks are. Typically if a red eyed tree frog has a fungal infection you would see symmetrical dis-colored marks on the torso as well. These could be (?) ( could be ) healing marks from scrapes having been so poorly cared for.

If this were my frog I would weigh him and contact Dr Frye using these photos in the email to him. If he were mine I would put
Silversulfadiazene on every one of these spots daily just in case. Since I know you are a nurse, you think of this as used for burns in humans; but for frogs it is used as a topical antibiotic / anti-fungal.

Those of us you have frogs should have these medicines on hand:
I just refilled my--- my order was replaced to treat " a large tree frog".
I have peace of mind knowing these meds. are on hand if one of my frogs becomes ill and I should need Dr Frye's help down the road and NOT have to wait for a delivery. If you were to purchase all of them at the same time it would cost $113.00 dollars including shipping. It took 3 days for me to receive my delivery.

Later today-I planned to a post a photo of my delivery ( along w/ a few other supplies) in the link above so members can get an idea
as to what these supplies look like.

http://www.frogforum.net/tree-frogs/...-prepared.html

Lynn