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GlossaryPerifollicular

area surrounding hair follicle

Perifollicular refers to the area surrounding a hair follicle. In medical and dermatological contexts, this term is often used to describe conditions or observations, such as inflammation or fibrosis, that occur around the hair follicles. For example, perifollicular inflammation is a common feature in certain types of hair loss, like alopecia areata, where the immune system attacks the hair follicles.

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Stress Inhibits Hair Growth in Mice by Inducing Premature Catagen Development and Harmful Perifollicular Inflammatory Events via Neuropeptide Substance P-Dependent Pathways

research Stress Inhibits Hair Growth in Mice by Inducing Premature Catagen Development and Harmful Perifollicular Inflammatory Events via Neuropeptide Substance P-Dependent Pathways

194 citations, March 2003 in “American Journal of Pathology”

Stress stops hair growth in mice by causing early hair growth phase end and harmful inflammation through a specific nerve-related pathway.

research Perifollicular Fibrosis: Pathogenetic Role in Androgenetic Alopecia

44 citations, June 2006 in “Biological & Pharmaceutical Bulletin”

Androgen hormones cause hair follicle scarring in hair loss, and finasteride helps reduce it.

research Perifollicular Erythema as a Trichoscopy Sign of Progression in Frontal Fibrosing Alopecia

40 citations, January 2013 in “International journal of trichology”

Perifollicular erythema can indicate active frontal fibrosing alopecia.

research Ceria Nanozyme-Integrated Microneedles Reshape the Perifollicular Microenvironment for Androgenetic Alopecia Treatment

38 citations, July 2021 in “ACS Nano”

Microneedles help treat hair loss by improving hair surroundings and promoting growth.

research Topical Minoxidil in Alopecia Areata: No Effect on the Perifollicular Lymphoid Infiltration

33 citations, July 1992 in “Journal of Investigative Dermatology”

Minoxidil doesn't affect perifollicular lymphoid infiltration in alopecia areata patients.

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community Polydopamine Synergizes with Quercetin Nanosystem to Reshape the Perifollicular Microenvironment for Accelerating Hair Regrowth in Androgenetic Alopecia.

in Research/Science 13 upvotes 1 year ago

A quercetin-encapsulated and polydopamine-integrated nanosystem (PDA@QLipo) shows promise for treating androgenetic alopecia by reshaping the perifollicular microenvironment, outperforming minoxidil in hair regeneration. The nanosystem promotes cell proliferation, hair follicle renewal, and recovery by scavenging reactive oxygen species and enhancing neovascularity.

community Novel effect of sildenafil (cialis) on hair growth

in Research/Science 19 upvotes 2 years ago

Sildenafil (Viagra) shows potential for hair growth by enhancing dermal papilla cell proliferation and stimulating perifollicular vessel formation. Users discuss the possibility of using Cialis (tadalafil) similarly, noting its benefits and side effects.

community Does 0.5 mg of finasteride reduce SCALP DHT the same as 1 mg?

in Finasteride/Dutasteride 15 upvotes 1 year ago

The conversation is about whether 0.5 mg of finasteride reduces scalp DHT as effectively as 1 mg. Users suggest that even lower doses like 0.05 mg can significantly reduce scalp DHT.

community The MPB itch aka DHT itch is very real.

in Chat 9 upvotes 2 years ago

Hair loss itch is caused by DHT attacking follicles and stimulating nerves. Finasteride users who respond well don't experience this itch.

community Why is my dermatologist strictly against derma stamping/derma rolling?

in Microneedling 27 upvotes 3 months ago

Dermatologists often advise against at-home microneedling due to risks of scarring, infection, and improper technique. Professional guidance is recommended for safe and effective use, with some users reporting positive results when done correctly.

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