an acute awareness of what their physical features actually are and why those features do not match up with the gender presentation expected of the gender with which they identify.
If a person with Gender Dysphoria has Gender Confirmation Surgery it is not the same as someone with Body Dis-Morphia. Someone who knows they are not in the body they are supposed to be is having the surgery for different reasons. This is why it is not a mental illness and why we cannot call it a "sex change" anymore. Sex Change sounds too non-nonchalant rather than the person doing the surgery for a good reason, i.e. their mental health and happiness. Gender Confirmation Surgery sounds more accurate pointed to the persons' needs and affirms that this was their gender the whole time. When someone suffering from Body Dis-Morphia has a surgery it is because they have anxiety about their body and gender has nothing to do with it.