Dr. Bernstein was interviewed by Dana Tyler, host of the television program “Eye on New York” on CBS, for the show that aired on April 17th. The wide-ranging interview was the feature in a 9-minute segment on hair transplantation and hair loss. Read further for a partial transcript of the interview.

Q: I am currently taking Avodart and have done so for around 8 months. Last night I had a significant loss of hair after taking a shower, nothing like I have ever seen before and found it very distressing. Can you tell me if this is hair loss or could it be something known as shedding and could you please tell me what is the difference between hair loss and hair shedding?

A: Hair loss is a very general term that can refer loss of hair for any reason. Genetic hair loss is caused by the effects of DHT on hair follicles that result in miniaturization -– i.e. a slowly progressive change in hair diameter that starts with visible thinning and that may gradually end in complete baldness. Hair shedding is more sudden where hair falls out due to a rapid shift of hair from its growth phase into the resting phase. The medical term for this is telogen effluvium. This process is usually reversible when the offending problem is stopped. It can be due to stress, medication, or other issues. You should see a dermatologist to figure out which process is going on. Dutasteride can cause some shedding when it first starts to work, but it would be unusual to do this after being on treatment for eight months.

Q: I have been taking one tablet of Propecia daily for the past 5 years, with good results, until may of this year. At that point I started to experience some hair loss and so you recommended that I switch from Propecia to generic finasteride and increase the dose to 1/2 of a 5 mg pill per day. I started taking the 1/2 tablet of finasteride daily one month ago, and for the past 2 weeks I have seen a lot of hair in the bathtub and on the towel after taking a shower. I have not made any other changes in my diet or my shampoo, and I do not have any conditions on my scalp. Please advise me on what needs to be done.

A: Just continue the medication at the higher dose. Either the finasteride hasn’t started working yet or you are getting temporary shedding from the medication (which means that it is working).

Q: I had a hair transplant 10 days ago and I lost some hair that looks like the hair fell out at the root.

A: When there is shedding after a hair transplant, it is the hair that is lost, not the follicle that contains the growth center (the follicle eventually produces the new hair).

Since the “hair” usually consists of a hair shaft and the inner and outer root sheaths, which creates a little bulb at the end of the hair, it looks like the hair is “falling out at the root.” Do not be concerned as this is not the growth center.

Q: If you transplant grafts in between the thinned out areas, is there a risk of cutting previously normal roots, even if one is cautious?

A: Healthy hair can be temporarily shocked from a hair transplant and then shed (the process is called telogen effluvium) but it will not be permanently damaged.

Any healthy hair that is lost in this shedding process should re-grow.