hello and welcome to HCM forum,
i would like to inform you that it is condition which has a hereditary as well as dietary cause, you have not mentioned anything about your medical history, i assume its fine,
i would suggest you to visit your dentist
and get the oral cavity checked thoroughly,
there is a treatment for this problem.
your dentist will prescribe you oral as well as topical medication
which will close the cracks over your tongue as well as treat the burning sensation associated with it.
also keep a few points in mind;
do not smoke,
do not consume alcohol,
drink lots of water,
avoid spicy food .
i wish you good health.