Seasonality of Hair Shedding in Healthy Women Complaining of Hair Loss

    January 2009 in “ Dermatology ”
    Michael Kunz, Burkhardt Seifert, Ralph M. Trüeb
    Image of study
    TLDR Healthy women tend to lose more hair in July and April, and the least in February.
    In a 6-year study involving 823 healthy women who reported hair loss, researchers discovered a seasonal pattern in hair shedding. The study, which excluded women with known hair loss diseases or on hair loss-inducing medications, utilized trichograms to find that the highest proportion of telogen hairs occurred in July, with a secondary peak in April, and the lowest in February. These findings, which did not vary significantly with age or year, support the idea that environmental factors like photoperiod may influence hair follicle cycles. This seasonal variation is important for the accurate assessment of hair loss treatments in clinical trials, as it could affect the interpretation of results, and for providing proper diagnoses and treatment plans for patients.
    Discuss this study in the Community →

    Research cited in this study

    14 / 14 results

    Related Community Posts Join

    6 / 1000+ results

      community 24M still losing on Dut and Oral Min

      in Update  26 upvotes 2 months ago
      A 24-year-old male is losing hair despite using dutasteride and oral minoxidil, with no regrowth from April to October 2024. He is considering increasing his dosage and looking for cheaper prescriptions, while others recommend consulting a trichologist or trying different treatments.

      community [AMA] 5-Month Progress Report: Dutasteride and Oral Minoxidil Results.

      in Minoxidil  73 upvotes 3 years ago
      Naepo's 5-month progress report detailing their journey of treating male pattern baldness with dutasteride and oral minoxidil, which has already resulted in an encouraging improvement in hair density. Others have responded with appreciation for the thorough report and asked further questions about Naepo's educational background.

      community Got a microscope camera. Here’s the difference between healthy and miniaturized hair

      in Progress Pictures  492 upvotes 2 years ago
      A user who shared progress pictures of their scalp using a microscope camera, demonstrating the difference between healthy and miniaturized hair. Various explanations for the cause of this were discussed, such as DHT build-up in scalp sebum causing an autoimmune response leading to inflammation and eventual hair loss, with some suggesting a do-it-yourself treatment involving adding ascorbic acid powder to shampoo.

    Related Research

    7 / 7 results