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Glossary Body Surface Area

measurement of the total surface area of the human body

Body Surface Area (BSA) is a measurement used to estimate the total surface area of the human body. It is often used in medical contexts to calculate drug dosages, assess metabolic rates, and evaluate the severity of burns. BSA is typically calculated using formulas that take into account a person's weight and height, such as the Mosteller formula.

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Research

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Standardization and Validation of Scalp Surface Area Measurement and Assessment of Interchangeability Between Two Independent Methodologies for Head Crown Area and Total Hair Count Measurement

research Standardization and Validation of Scalp Surface Area Measurement and Assessment of Interchangeability Between Two Independent Methodologies for Head Crown Area and Total Hair Count Measurement

February 2026 in “Cureus”

This study validated that both tape-based and image-based methods for measuring head crown areas, and the CASLite NOVA as well as Image-Pro software for hair count, showed acceptable agreement, supporting their interchangeable use in hair care research settings.

research Healing beyond the surface: A constitutional homeopathic approach to alopecia AREATA: A case study

April 2025 in “International Journal of Homoeopathic Sciences”

In this case study, individualized classical homeopathy was reported to effectively promote significant hair regrowth and improve emotional stability in a patient with alopecia areata, showcasing a potential holistic and sustainable alternative to conventional treatments.

research Brigham Eyebrow Tool for Alopecia: A Reliable Assessment of Eyebrow Alopecia Areata

4 citations , November 2020 in “Journal of Investigative Dermatology Symposium Proceedings”

The Brigham Eyebrow Tool for Alopecia is a simple and reliable way to measure eyebrow hair loss.

research Functional analysis of the stratum corneum of scalp skin: studies in patients with alopecia areata and androgenetic alopecia

52 citations , December 2000 in “Archives of Dermatological Research”

This study found that the stratum corneum of scalp skin in humans has distinct functional characteristics compared to the facial skin and volar forearm, including higher hydration levels and intermediate epidermal turnover rates.

research Clobetasol Propionate, 0.05%, vs Hydrocortisone, 1%, for Alopecia Areata in Children

49 citations , November 2013 in “JAMA dermatology”

This study found that topical clobetasol propionate cream was more effective than hydrocortisone cream in reducing hair loss surface area in children with patchy alopecia areata over 24 weeks, with no serious adverse effects.

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Community Join

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community Does regrowth always start as thin hairs? Do hairs thicken as they grow or do they need to shed and then come back to get thicker?

in Chat 32 upvotes 1 year ago

Hair regrowth can start as thin hairs that may thicken over time, with treatments like finasteride and minoxidil showing varied results. Some users report initial shedding followed by thicker regrowth, while others experience mixed outcomes in different areas.

community Cool hair transplant visualization

976 upvotes 1 year ago

The conversation discusses hair transplants, including the use of techniques like FUE and the importance of a good donor area to avoid visible bald patches. It also touches on alternative treatments like Minoxidil, Finasteride, and Pyrolutimide, and debates the idea of embracing baldness versus seeking treatments.

community My microneedling journey (no min, fin, etc)

in Microneedling 210 upvotes 1 year ago

The user experienced positive hair growth results using microneedling with rosemary and mint oil, without Minoxidil, Finasteride, or RU58841. They switched from a dermaroller to a microneedling pen and targeted different scalp areas weekly.

community Topical minoxidil can still kill cats even when the owner is “careful.”

in Minoxidil 259 upvotes 1 month ago

Topical minoxidil can be dangerous to cats, even with accidental exposure, and users should be cautious to prevent poisoning. Proper precautions, like washing hands and preventing cats from licking treated areas, are essential to minimize risk.

community PSA Topical Minoxidil is Deadly to Cats

416 upvotes 4 months ago

Minoxidil is extremely toxic to cats, even from residue on surfaces, and can be deadly if they come into contact with it. Switching to oral minoxidil is suggested as a safer alternative for pet owners.

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