My mother and I want to go for umrah this year and I am 17 years old and my mother is above 45. Can I accompany her as a mahram for umrah?
Yes you can (at least I'm pretty sure because of your age)!
The four conditions on which scholars have consensus for a male mahram to accompany a woman while traveling are:
- being a Muslim الإسلام
- being mature (puberty البلوغ, mokallaf مكلف)
- being mentally sane العاقل
- being able to travel القدرة
(For details read this article in Arabic)