Stop obsessing over fibres.
While u wast ur tme on that u might actually be dying for quite some time already. And not due to some bug or parasite or organism but because your body is ill.
There is on disease out there that can cause a shitload of skin problems and malfunctions that is unpredictible out of control and growing all kinds of weird stuff. U wanna debate wether ur body can grow these fibres? Your body can grow nails, hair, teeth
Oh whats the point, noone ever listens. 1/3 of the people will get skin cancer in their life is the prediction. U wanna find odds... Those are odds. And odds are that some types remain undiagnosed because they are not often diagnosed untill late stages. Its a known fact. So this fits our scenario and happens enough to cover the lot of us.