What is Norwood Class?

Norwood Class refers to a classification system used to categorize male pattern baldness, specifically focusing on the progression and severity of hair loss in men. Named after Dr. O’Tar Norwood, who developed the scale in the 1970s, the Norwood Class scale helps dermatologists and hair restoration specialists assess hair loss patterns and recommend appropriate treatments. It consists of several stages, ranging from minimal hair loss at the temples (Norwood Class I) to extensive hair loss across the crown and frontal scalp (Norwood Class VII). Each stage reflects the gradual recession of the hairline and thinning of the scalp, providing a standardized way to communicate the extent of male pattern baldness and guide treatment decisions. Understanding a patient’s Norwood Class is essential for developing personalized treatment plans, whether through medications, hair transplant surgery, or other interventions aimed at restoring hair density and improving aesthetic outcomes.