telogen
noun
te·lo·gen ˈtē-lə-ˌjen 
: the resting phase of the hair growth cycle that typically lasts three months, is preceded by anagen and catagen, and is usually followed by shedding of the hair shaft during exogen
Note: Anagen will immediately follow telogen if hair is not shed at the end of telogen during the exogen phase.
Example Sentences
Recent Examples on the Web Chronic telogen effluvium, where the shedding continues for months, is possible. 
Melanie Rud, SELF, 26 May 2022 In healthy hair cycles, most hairs are in a growing phase, with a small percentage in a short resting phase and only about 10 percent of hairs in a shedding or telogen phase. Pam Belluck, New York Times, 24 Sep. 2020 The delayed result, a form of diffuse hair loss called telogen effluvium, was causing her hair to fall out in frightening clumps. New York Times, 3 Feb. 2020 Hairs in the telogen phase generally fall out 100 days later, which means that people would see a shedding at the end of the summer and into the fall. Allure, 21 Nov. 2019 But, in some cases, your body might shed an excessive amount of hair (telogen effluvium). Korin Miller, SELF, 10 Aug. 2018 What’s more likely is that telogen effluvium is at play (again). Jane Chertoff, SELF, 13 July 2018 Thyroid problems: Excessive hair loss, or telogen effluvium, can be a sign that your thyroid gland is overactive (hyperthyroidism) or underactive (hypothyroidism). Meghan Overdeep, Southern Living, 29 Mar. 2018 The subsequent decline in estrogen levels and rise of the stress hormone cortisol causes hair to move from the anagen cycle (growth) to the telogen phase (shedding), Wesley describes. Priya Rao, Vogue, 19 Mar. 2018 See More
Melanie Rud, SELF, 26 May 2022 In healthy hair cycles, most hairs are in a growing phase, with a small percentage in a short resting phase and only about 10 percent of hairs in a shedding or telogen phase. Pam Belluck, New York Times, 24 Sep. 2020 The delayed result, a form of diffuse hair loss called telogen effluvium, was causing her hair to fall out in frightening clumps. New York Times, 3 Feb. 2020 Hairs in the telogen phase generally fall out 100 days later, which means that people would see a shedding at the end of the summer and into the fall. Allure, 21 Nov. 2019 But, in some cases, your body might shed an excessive amount of hair (telogen effluvium). Korin Miller, SELF, 10 Aug. 2018 What’s more likely is that telogen effluvium is at play (again). Jane Chertoff, SELF, 13 July 2018 Thyroid problems: Excessive hair loss, or telogen effluvium, can be a sign that your thyroid gland is overactive (hyperthyroidism) or underactive (hypothyroidism). Meghan Overdeep, Southern Living, 29 Mar. 2018 The subsequent decline in estrogen levels and rise of the stress hormone cortisol causes hair to move from the anagen cycle (growth) to the telogen phase (shedding), Wesley describes. Priya Rao, Vogue, 19 Mar. 2018 See More Word History
Etymology
telo- + -gen
First Known Use
1926, in the meaning defined above
Medical Definition
telogen
noun
te·lo·gen ˈtē-lə-ˌjen
: the resting phase of the hair growth cycle that typically lasts three months, is preceded by anagen and catagen, and is usually followed by shedding of the hair shaft during exogen
Note: Anagen will immediately follow telogen if hair is not shed at the end of telogen during the exogen phase.
Scalp hairs spend four to eight years in anagen and just two to four months in telogen. Julianne Dunphy
Julianne DunphyThe remaining 10 percent of hairs are in a resting phase called telogen that lasts about three months, after which the resting hairs start falling out. Jane E. Brody
Jane E. Brody