The Ludwig scale is the generally accepted standard when describing and measuring the extent of female hair loss and uses 3 different classifications:
In this stage, hair loss is considered to be mild. Most women may have difficulty noticing that hair loss has occurred, as the frontal hairline remains relatively unaffected. Hair loss may occur on the top and front of the scalp. Such hair loss may be noticeable when the hair is parted down the center of the scalp, as more and more scalp will become visible over time.
This type of hair loss is considered moderate. In this stage, women may notice each of the following: Thinning, shedding, general decrease in volume, and a center part that continues to widen over time. Depending on the severity, a hair transplant procedure may be a viable option for women who exhibit a Type 2 classification.
This is the final and most extreme classification of female hair loss. In this stage, hair is so thin that it has difficulty camouflaging the scalp, rendering it visible to the naked eye. This may be worsened by a number of factors, including hair miniaturization, progressive thinning, and extensive loss.