first of all dear one needs immense stamina and will power to go there. its not so easy. i heard u need to walk for many kms and the climate is very extreme.
a person should be healthy enough to go there. u need to practice brisk walk for min 5 kms everyday for atleast 2 months and make ur self physically fit. then u must be prepared to tolearte immense weather conditions its too cold there sometimes below zero degress temperature. epilepsy i suppose is a mental disorder. i dont think one should risk his/her life n go there. give it a skip.
after all all lord mahadev expects true devotion from his disciples. if we pray with gr8 devotion to him we can feel his presence around us only. there's no need to go to kailash for that. but if ur physically n mentally strong thats going to be one memorable n adventurous journey i would say.