Leopard Gecko - Health Issue

A customer I've been helping at work with her leopard gecko came in last night, worried about her leo. She says he has started to shake when he moved from one side of the tank to the other. His temperatures are fine. Hot side at 88 (that is what I keep my girl at and she has no issues). He is fed on mealworms (though his appetite has gone down for the past 2 weeks. She's lucky if she gets him to eat one a day.) He has access to a calcium dish and fresh water daily. He also has two places to hide, one being a humid hide. He recently shed as well.

I asked her to explain the shaking and she says that he'll get up from one hide and make his way over to the other hide. During the entire walk to the other hide, he shakes (whole body). Once he is in his other hide, he settles down and stops shaking. So it is only when he walks. She was worried it has to do with calcium absorption as she read online leos can get MBD.

Any thoughts on this? She loves this little gecko and I'd really like to help her. I am going to recommend she take him to the vet, but I wanted to see if I could get an idea of what he might have so she can take that info with her to the vet.

I agree with her suspicions that it's MDB. They wont really shake like that unless theirs a problem physiologically. If she'd visit a vet, they could tell her for sure, but I don't think she's been dusting the worms with calcium.

Have her continue feeding worms, or attempting to, and start dusting them with calcium along side the calcium dish in the tank. Maybe a vet visit in the near future as well.

See I've never had to dust insects for my leo. She licks all her calcium from her dish. I've dusted crickets from time to time, but for the most part, she just gets it herself. Are there leos that won't lick up their own calcium?

I know worms are hard to dust because the calcium won't cling to the shells very well. He refuses to eat crickets, so mealworms are her only option. (she won't do roaches) I will recommend she see a vet to confirm MBD or not.

I dust every other time I feed, and then I also keep a dish in the tank. For some, they wont do it, and others don't know it's there more often than not. I wish some times there was a water treatment that boosted calcium in the water for picky eaters.