| TYPE I WE DO NOT ACTUALLY OBSERVE HAIR LOSS |
| TYPE II MILD RECESSION OF THE FRONTAL LINE, SLIGHTLY EVIDENT AT THE TEMPLES.
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| TYPE IIa DEEPEST RECESSION OF THE HAIRLINE REPRESENTS THE EARLIER STAGE OF HAIR LOSS
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| TYPE III DEEP RECESSION OF THE FRONTAL HAIR LINE TO THE SHAPE OF Μ
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| TYPE IIIa DEEPEST RECESSION OF THE FRONTAL LINE. THERE IS A MORE EXTENDED THINNING AREA
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| TYPE III vertex HAIR LOSS ALSO EXTENDS TO THE CROWN
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| TYPE IV EXTENDED THINNING IN THE CROWN. THE FRONTAL HAIRLINE TENDS TO MEET THE CROWN, BUT THERE IS STILL A STRIP OF HAIR SEPARATING HAIRLINE AND CROWN
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| TYPE IVa THINNING ON THE UPPER AND FRONTAL PART OF THE SCALP IN THE SHAPE OF A HEMICYCLE
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| TYPE V EXTENDED THINNING AT THE CROWN. THE FRONTAL HAIRLINE STARTS MEETING THE CROWN
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| TYPE Va EXTENDED THINNING ON THE UPPER AND FRONTAL PART OF THE SCALP
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| TYPE VII
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