Norwood scale, loss hair count

[Dav7]

This is a question I've been searching all over for but cannot find the answer to. Roughly, how many thousands of hairs lost does each Norwood scale level represent? For example is it the case that e.g. (a) A Norwood 2 has lost 10,000 hairs, (b) A Norwood 6 has lost 50,000 hairs, (c) a Norwood 7 has lost 60,000+ hairs? What would be the exact (or close) representation of hair loss count with each Norwood level?

[nynex]

I think it depends on the type of hair you have. If you have thick dense curly hair then you would probably have to loose more hairs than say someone who has fine straight hair to be on the same norwood level. I'm not a medical professional but thats my common sense based explanation.

[redy]

I think it's just based on appearance and uniformity compared to the rest of your head in density.

[burtandernie]

Yeah there are no accurate medical tests its just an eyeball kind of thing here in the year 2013.

[Dav7]

Anyone care to answer this one if they've some knowledge of the matter?

[Dr. Glenn Charles]

The Norwood scale refers to a particular pattern of male pattern hair loss. Which in my experience not that many patients seem to fall neatly into any category. I would like to see a new hair loss grading system created that included more of the common atypical patterns of hair loss. The number of hairs lost is not part of the Norwood system.

[baldozer]

Anyone care to answer this one if they've some knowledge of the matter?

I read sometimes ago that every 1 in the Norwood scale amounts to roughly 10,000 hair or 5,000 follicular units. That is why, Hair transplants are pretty useless, they can only subtract 1 point on the Norwood Scale. For example, take you from NW3 to NW2, or NW4 to NW3. If you want to subtract more than 1 point, you would have to do with a thinner head of hair.