If you have geographic tongue, will it constantly be there for the rest of your life or will it come and go?

Come and go, but...: Tongue is known to have many variations with pigmenting, size, appearance, & not always due to disease.Other causes of tongue that looks patchy include: lichen planus (responds to steroids), white sponge nevus (familial, benign, permanent), smoker's leukoplakia (2% risk of cancer, needs biopsy), hairy leukoplakia (due to epsteinbarr virus), warts (due to papillomavirus), "thrush" (rx antifungals).

Yes: You are born w this. However it is worse at some times than others. As an adult it can become better w time. Stress , hormonal changes, and certain foods can cause it to worsen. It is not a dangerous condition.