Crowds in Tokyo, Japan, are flocking to spas for a new treatment in which fish are allowed to feed on customer's body parts, according to a report.

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IMAGES: Images Of Fish-Eating Therapy
IMAGES: More strange stories, images

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The spa therapy includes tiny doctor fish that lick or suck the dead human skin from customers.

Supporters of the treatment said the fish can clear up skin conditions, like psoriasis by removing the diseased skin and exposing the body to water and ultraviolet light.

Local 6 News showed video of several people allowing the fish to eat their feet.

"We had a customer who was treated with doctor fish for about a month and his dermatitis cleared right up," a spa representative said.

"They are going right for the dried out parts of my feet," a customer said.

Several other spa customers said the fish tickle when they are removing their skin.

The report said when there are no humans in the pools and plankton runs low, the fish eat each other.

Watch Local 6 News for more on this story.