Hair loss at Age 23: Started after Keratin hair straightening. No receding in hairline, but decreased hair density.

I'm 23 year old (male), with no balding history on my mother side, but my father is bald. My hair type is completely different from father side of family. I have curly dense hair. I decided two years ago to do keratin hair treatment and straightened my hair three times in a year. After the second treatment my hair density decreased and ever since that I have excessive hair fall everyday. I'm not sure if this is male pattern baldness or due to chemicals and extensive heating.