Not necesseraly, i've began to notice hairloss at the age of 15, pretty rough and agressive, like 50+ hairs on my pillow every damn morning, changing sheets daily to check if this was regular, it was...
Visit some top derm in South of France, including one doing worldwide conference who puts me right away on minoxidil, saying too young for finasteride obviously.
minoxidil 5% was a disaster personaly, for three years, itchy and red scalp, lots of dandruff, and low efficacity.
By the age of 18, switched to finasteride 1m/d.
A friend of mine began to loose it at the exact same age, he did nothing, no minoxidil, no finasteride, only available treatment in 2001.
Anyway, he had a Norwood 7 be the age of 18 (true story), very agressive, like mine, he shaved his head before graduated to high school.
My dad was Norwood 7 at 22, no options back then.
Been stable for 13 years, now 31, but it seems less potent, dry itchy scalp again and poor hair quality, hairline is receiding again.
Bottom line is, everyone is different with those treatments, try finasteride and minoxidil for a solid year and stay on it, it can work for agressive pattern, if you get sides or if it don't work...well i'll stay away from Duta imo
Good luck on this journey