How to use the hair loss stage lookup
Choose the Norwood stage you believe you match and the page prints how that stage is described in words. Add a start date for your observation plus the interval and number of reassessments you have chosen, and it builds a dated schedule round by round and tells you which round is next relative to today.
The Norwood classification is a descriptive scheme read against reference illustrations, with no numeric criteria attached to each stage. That is why the page never assigns a stage for you; it only looks up the description for the stage you pick, and it builds no score from daily shedding counts or family history. In the date math one month is a calendar month, and a start date such as the 31st is clamped to the last day of a shorter month. Current as of October 2026.
No authoritative recommended interval is given. It is widely accepted that hair grows in cycles so change takes time to become visible, but a suitable interval depends on the person and the treatment, so the interval stays an input you control. This page is a date calculator and not a medical diagnosis. If hair comes out in clumps over a short period, or the scalp becomes painful, inflamed or scarred, see a dermatologist.
Frequently asked questions
No. The Norwood classification is a descriptive scheme read against reference illustrations, with no numeric criteria per stage. The page only shows the description for the stage you choose, and it builds no score from daily shedding counts or family history.
No authoritative interval is given here. Hair grows in cycles so change takes time to see, but a suitable interval depends on the person and the treatment. Enter the interval you have settled on and the dates are built from that alone.
The date is clamped to the last day of that month. One month after 31 January becomes 28 February, or 29 February in a leap year. One month is treated as a calendar month.