my lizard has a puffy face

Question
QUESTION: I have had my lizard Tike for about 2-3 years.We got him when he was a baby and he already has lost his tail.But thats not the problem. When i looked at him a few days ago i relized that one side of his face was puffy. Is he sick? Can this be helped? I love him much and don't want him to die so I need help.Should I take him to the vet to be treated? i don't know what to do. I really need help. I have already asked a question like this but  did not recive an answer and have been checking my email every day. I super need help bofore somthing happens and he dies. :(      signed,
         julia

ANSWER: Hello Julia,

Can you go over your setup with me?  Is this a bearded dragon?  
What are your temps in the tank?  What do you take the temps with?
What type & brand of UVB light are you using, is it a flourescent tube or a compact or coil light?  How old is the light?  
What type of basking light are you using, a bright white light or a colored light?  
Are you supplementing calcium, & if so, how often are you giving it?  

Tracie

---------- FOLLOW-UP ----------

QUESTION: sure.no he is a leopard gecko.i have never taken temps.the light is not old.(light nor light bulb) Bright white light is what I use.no i am not spplementing calcium.

Answer
Hello Julia,

Ok, a leopard gecko.  Let's go over your setup.  
You need to have an undertank heater along with a low wattage light for basking during the day, or a ceramic heat emitter for heating.  They do not need any lighting at night, BUT, they do need the undertank heater on 24/7 otherwise, they will get too cold.
You do need a hot spot of around 88-90 for him, & a cooler area around 78-80.  He needs a moist humid hide as well, to aid in shedding.  
Make sure his hide is a little bit over the undertank heater to increase humidity & use some moss & keep it damp daily.
Keep a little dish of calcium powder in his tank, & he will instinctively lick it out of the dish.
If he is not eating right now, then, you are going to need to get some chicken or turkey babyfood & a dropper & get some food into him, along with some fluids.  He needs some nourishment.  You can also get some pedialyte as well to use along with that.
You will need to get a digital probe or a temp gun to check the temps.  He is probably not warm enough & may have some type of respiratory infection & if he is not getting any calcium could have some metabolic issues as well.
Let me know how he is doing.
Tracie