Surroundings becoming weird and fast/intense/loud

[123que]

I first experienced this weird sensation when i was a child and had a bad fever/illness in bed. Suddenly my entire surroundings in my bedroom became very intense and everything around me became fast and almost louder in my mind, although they weren't in reality.

Ever since then i sometimes (about once every few months) experience this odd sensation and it can become a bit worrying and strange.

The whole room seems to have a new feeling to it- everything im doing whether it be walking or typing seems to intensify and become louder yet the actions are very exaggerated and almost speed up (only perceived this way). I find it very difficult to explain fully but i'm worried it's some early signs of a neurological condition or something?

It usually only onsets when i'm alone and have a lot of silence for a while...?

Does you know what this could be, please?