Predicting a Class 5A pattern before it happens

This is an easy pattern for an expert’s eye to predict as outlined (in the right photo I marked up the left photo). The Norwood Class 5A pattern has a narrow crown component and when this man completes his balding pattern he will be bald back to the top of his crown (indicated on the photo). What is significant is the persistent forelock which has hair that is stronger than the surrounding hair. These forelocks tend to run in families and if this man keeps his forelock until he is 35, it is likely he could maintain it in the long term.  Looking back at his family patterns, he should see if his father or grandfathers had this persistent juvenile hairline into older ages.  From a transplant perpective, when this man’s balding becomes significant enough to require a hair transplant, having an “A” pattern is good news because almost everyone with the ‘A’ type patterns always have enough hair to get a full head of hair restored.