Isotretinoin side effects

Patient: Hi Doc ,I am suffering from acne from many years but it’s more severe since last year December.I have been using Tretinoin cream since last six months.but now it stopped working for me.My doctor has recommended me Isotretinoin 20 mg twice a week for six months.I am concerned as I have read about the long run side effect of the same including birth defects, hair loss, baldness, joint pain, fragile and dry skin and hair.Please suggest me if this is correct medicine for me at this stage.RegardsKamal

Symptoms: Acne on face ,neck , back arms.