Resurfacing Micro Chip

[seche]

Has any one heard of micro chips working their way to the surface of a horses neck?

This appears to be happening to my horse on his neck where the chip was put in circa 6 years ago. I cant think what else it is as its the exact site where the chip was inserted.
Was wondering if I should have it removed as it is now sticking up quite proud rather than laying flat between his neck muscle and skin..
(Its certainly not a warble fly or any form of bite)...

 

[hogged cob]

They can move, we had our dog microchipped and it moved and went under her armpit. it was removed by the vet.

 

[Mocha]

Perhaps if it wasn't put in properly in the first place... never personally seen or heard of them resurfacing though.

Do you know how big a microchip is? Is smaller then a grain of rice.

Its about the same size and length as these three stars .... *** (well, how they look on my computer screen anyway!)

And if its that close to the skin you should be able to take the skin between your fingers, squeeze slightly and feel it. They feel very distinctive because of how small and hard they are.