No visible thinning
Slight thinning at hairline only
Thinning at crown only
Thinning at both hairline and crown
Overall scalp thinning
Minimal (few strands)
Noticeable (moderate amount)
Excessive (large clumps)
Not visible through hair
Slightly visible in certain lighting
Very visible/clearly showing
Less than 6 months
6-12 months
Over 1 year