Regarding the effectiveness of hair loss treatment, what criteria are used to assess the condition and changes during the initial consultation?

I am a 35-year-old woman concerned about hair loss as well as skin issues, so I am looking into a consultation. When evaluating the effectiveness of hair loss treatment, I would like to know if the results are simply compared based on how much hair appears thicker, or if there are specific items checked separately, such as hair thickness or scalp condition. I would also like to know what is checked first during the initial visit, assuming that I have not yet been diagnosed with the cause or type of hair loss.

Would it be helpful to prepare the names of the shampoos or scalp products I normally use, as well as a list of medications and supplements I am currently taking, before the consultation? I would also like guidance on how much detail regarding my lifestyle habits and family history I should provide. If any tests are necessary, I am curious to know if additional tests are required based on specific findings during the consultation.

Once I have decided on a hair loss treatment method, I would like to know how to document my condition before starting and at what point I should compare it later. If I take photos at home, I would like to inquire whether I simply need to maintain consistency in my parting and lighting, and whether I need to count the number of hairs falling out every day.

To avoid judging the effectiveness of hair loss treatment too early or unnecessarily increasing management, it would be best to distinguish from the start between plans for maintenance and situations requiring follow-up consultations for adjustments. Providing realistic observation criteria, including individual differences and limitations, would be helpful for preparing for the consultation.