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    Did you mean Hereditary Hypotrichosis Simplex?
    Glossary Hereditary Hypotrichosis Simplex

    genetic condition causing progressive hair thinning and loss

    Hereditary Hypotrichosis Simplex (HHS) is a genetic condition characterized by progressive hair thinning and loss, typically beginning in childhood or adolescence. Unlike other forms of hair loss, HHS does not involve scarring or other skin abnormalities, and it primarily affects the scalp, leading to sparse or absent hair over time.

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