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GlossaryTelogen Hair

hair in the resting phase before shedding

Telogen hair refers to hair that is in the resting phase of the hair growth cycle, known as the telogen phase. During this phase, which typically lasts around 2-4 months, the hair is not actively growing but remains attached to the follicle until it eventually sheds to make way for new growth. This is a normal part of the hair cycle, and it's common to lose 50-100 telogen hairs daily.

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Indications for a Brain-Hair Follicle Axis: Inhibition of Keratinocyte Proliferation and Up-Regulation of Keratinocyte Apoptosis in Telogen Hair Follicles by Stress and Substance P

research Indications for a brain‐hair follicle axis: inhibition of keratinocyte proliferation and up‐regulation of keratinocyte apoptosis in telogen hair follicles by stress and substance P

125 citations , September 2001 in “The FASEB Journal”

Stress can cause hair loss by negatively affecting hair follicles and this effect might be reversed with specific treatments.

research Dietary supplement increases anagen hair rate in women with telogen effluvium: results of a double-blind, placebo-controlled trial

47 citations , December 2006 in “Therapy”

The dietary supplement helped increase hair growth in women with hair loss.

Electron Paramagnetic Resonance Spectroscopy for Investigating Murine Telogen Skin After Spontaneous or Depilation-Induced Hair Growth

research Electron paramagnetic resonance (EPR) spectroscopy for investigating murine telogen skin after spontaneous or depilation-induced hair growth

22 citations , February 2008 in “Journal of Dermatological Science”

EPR spectroscopy showed that spontaneous hair growth results in thicker skin and less pigmented hair than depilation-induced growth.

Histopathological Insights Into Hair Loss in Cronkhite-Canada Syndrome: Diffuse Anagen-Telogen Conversion Precedes Clinical Hair Loss Progression

research Histopathological insights into hair loss in Cronkhite-Canada syndrome: Diffuse anagen-telogen conversion precedes clinical hair loss progression

16 citations , May 2013 in “Australasian Journal of Dermatology”

Hair loss in Cronkhite-Canada syndrome is reversible by treating the gut issues and doesn't need steroid treatment for the hair itself.

research Localized Telogen Effluvium Following Hair Transplantation

11 citations , January 2018 in “Annals of Dermatology”

Some people experienced temporary hair loss after hair transplant surgery but recovered fully within 10 months.

research A technique for more precise distinction between catagen and telogen human hair follicles ex vivo

9 citations , February 2018 in “Journal of The American Academy of Dermatology”

Researchers developed a new method using methylene blue staining to more accurately identify the growth stage of human hair follicles.

research The Ultrastructure of Tissue Attached to Telogen Hair Roots

6 citations , August 2008 in “Journal of Forensic Sciences”

Recognizing specific tissue types on telogen hair roots can improve DNA typing.

research Complementary Strategies to Promote Hair Regrowth in Post-COVID-19 Telogen Effluvium

3 citations , April 2022 in “Clinical, Cosmetic and Investigational Dermatology”

Different methods, including stress management, healthy diet, supplements, and treatments like minoxidil, can help hair grow back after COVID-19 related hair loss.

research Analysis of Microscopic Examination of Pulled Out Hair in Telogen Effluvium Patients

3 citations , January 2020 in “Annals of Dermatology”

More atypical club hairs may indicate Telogen Effluvium.

research Pigtail hair in acute telogen effluvium – Lest we forget!

1 citations , January 2020 in “Indian Dermatology Online Journal”

Pigtail hair is a sign of new hair growth and should be recognized in hair loss conditions like acute telogen effluvium.

research Telogen hair loss and androgenetic‐like alopecia in GAPO syndrome

1 citations , September 2018 in “Australasian Journal of Dermatology”

A boy with GAPO syndrome had hair loss similar to male pattern baldness without hormone issues, possibly due to skin or blood vessel problems.

Immune Response Involving the Bulge Region in Addition to Telogen Conversion Contributes to Hair Loss in a Case of Atypical Drug-Induced Hypersensitivity Syndrome

research Immune response involving the bulge region in addition to telogen conversion contributes to hair loss in a case of atypical drug-induced hypersensitivity syndrome

1 citations , October 2013 in “The Journal of Dermatology”

Hair loss in a drug reaction case involved both a common shedding phase and an immune attack on hair follicle stem cells.

research Hair Root Dermoscopy from Shed Hair: A Simple Diagnostic Tool in Telogen Effluvium

January 2024 in “International Journal of Trichology”

Hair root dermoscopy is a simple, noninvasive tool to diagnose telogen effluvium.

Effects of Platelet-Rich Plasma on Hair Follicle Count and Hair Ratios in Androgenic Alopecia: Alone or Combined with Other Treatments

research Effects of platelet-rich plasma application on hair follicle count, telogen/anagen ratio, and miniaturized hair ratio in patients with androgenic alopecia: alone or in combination with other treatments

July 2025 in “Journal of Dermatological Treatment”

PRP improves hair growth in androgenic alopecia, especially when combined with minoxidil.

research Effective combination therapy for telogen hair loss

December 2024 in “Medical alphabet”

The combination of "Time to Grow" and "Thick and Strong Hair" effectively reduces hair loss and improves hair quality.

research Acute Versus Chronic Telogen Hair Loss: A Review of the Knowledge and Recent Facts

June 2024 in “Al- Anbar Medical Journal”

Acute telogen effluvium can be resolved by addressing causes, but chronic telogen effluvium is harder to treat.

research A hair loss pandemic: 19 cases of COVID-19 induced telogen effluvium

November 2022 in “Journal of clinical images and medical case reports”

COVID-19 can cause hair loss in both severe and mild cases, often affecting women.

The Necessity of a Holistic Approach to the Treatment of Telogen Hair Loss Associated with Iron Deficiency in Women

research The necessity of holistic approach to treatment of telogen hair loss associated with iron deficiency in women

December 2020 in “Vestnik dermatologii i venerologii”

Combining iron supplements with physiotherapy could better treat women's hair loss linked to iron deficiency.

research The necessity of holistic approach to treatment of telogen hair loss associated with iron deficiency in women

December 2020 in “Vestnik dermatologii i venerologii”

Iron supplements and physiotherapy together can better treat hair loss in women with iron deficiency.

research FGF18 signaling determines radioresistance of telogen hair follicles by the arrest of hair cycling

September 2016 in “Journal of dermatological science”

FGF18 helps hair follicles resist radiation by stopping hair growth cycles.

research Localized telogen effluvium following hair transplantation

May 2015 in “Journal of The American Academy of Dermatology”

Some people may temporarily lose more hair in certain areas after a hair transplant.

research [Changes in telogen rate, hair density, hair diameter and rate of growth in androgenetic alopecia of the male. Simultaneously a contribution to the significance of dysplastic hair].

April 1986 in “PubMed”

Frontal hair in male pattern baldness shows reduced growth and thickness.

research Postfebrile telogen effluvium: hair fall after Rickettsia conorii infection

5 citations , January 2019 in “Giornale italiano di dermatologia e venereologia”

Hair loss can happen after a fever caused by Rickettsia conorii infection.

research Hair Loss and Telogen Effluvium Related to COVID-19: The Potential Implication of Adipose-Derived Mesenchymal Stem Cells and Platelet-Rich Plasma as Regenerative Strategies

3 citations , August 2022 in “International Journal of Molecular Sciences”

COVID-19 can cause hair loss, and treatments like PRP and stem cells might help.

research Telogen effluvium: hair loss after spinal cord injury.

August 1984 in “PubMed”

A man had temporary hair loss after a spinal cord injury, with some permanent thinning remaining.

research The inductive effect of ginsenoside F2 on hair growth by altering the WNT signal pathway in telogen mouse skin

42 citations , March 2014 in “European Journal of Pharmacology”

Ginsenoside F2 from ginseng may increase hair growth better than standard treatments by affecting cell growth signals.

Efficacy of Oral Vitamin D3 Therapy in Patients Suffering from Diffuse Hair Loss (Telogen Effluvium)

research Efficacy of Oral Vitamin D₃ Therapy in Patients Suffering from Diffuse Hair Loss (Telogen Effluvium)

6 citations , January 2021 in “Journal of Nutritional Science and Vitaminology”

Taking vitamin D3 pills helped improve hair growth in women with a certain type of hair loss.

research Exposure to gamma-rays at the telogen phase of the hair cycle inhibits hair follicle regeneration at the anagen phase in mice

6 citations , November 2013 in “International Journal of Radiation Biology”

Gamma-rays exposure during the resting phase of hair growth can damage hair regeneration and color in mice.

The Morphological Structure of Female Telogen Effluvium and Alopecia Areata Hairs According to Curriculum Contents of Beauty Art Department

research The Morphological Structure of Female Telogen Effluvium and Alopecia Areata Hairs According to Curriculum Contents of Beauty Art Department

January 2014 in “Journal of the Korean Society of Design Culture”

The study confirmed that changes in hair structure in women with hair loss conditions matched what is taught in beauty college trichology courses.

research Transcriptomic analysis reveals critical genes for the hair follicle of Inner Mongolia cashmere goat from catagen to telogen

25 citations , October 2018 in “PloS one”

Key genes regulate hair follicle phase changes in Inner Mongolia cashmere goats.