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143 citations,
January 2007 in “The American Journal of Human Genetics” Certain genes on chromosomes 6, 10, 16, and 18 may increase the risk of alopecia areata.
12 citations,
March 2011 in “Pediatric dermatology” An 18-year-old girl was diagnosed with a rare hereditary hair loss condition, despite no family history.
9 citations,
August 2002 in “Current Opinion in Pediatrics” An 18-year-old girl with pemphigus vulgaris needed strong medication and careful treatment due to ineffective initial therapies and side effects.
4 citations,
January 2021 in “Cell transplantation” Scientists found the best time to transplant human stem cells for hair growth is between days 16-18 when they have the right markers and growth potential.
March 2024 in “Journal of Natural Remedies” An 18-year-old with hair loss saw hair regrowth after treatments combining microneedling, cupping, medication, and oil application.
May 2021 in “Journal of the Endocrine Society” The 18-year-old girl likely has a condition called müllerian agenesis, which caused her to not have a uterus and experience no menstrual periods.
IL-18 signaling helps mature Tregs move into the thymus.
IL-18 signaling helps mature Tregs move into the thymus.
February 2018 in “BMJ case reports” An 18-year-old woman was diagnosed with a rare skin condition called Pityriasis rubra pilaris.
25 citations,
May 2008 in “Journal of cosmetic dermatology” Conditioning agents, especially jojoba oil and lauryl PEG/PPG-18/18 methicone, protect and strengthen chemically straightened Afro-ethnic hair.
Children under 18 had milder SARS with no deaths, but teenagers faced higher severe illness risk, and effective treatments were uncertain.
8 citations,
May 2022 in “Orphanet Journal of Rare Diseases” The UD-PrOZA program successfully diagnosed 18% of adult patients with rare diseases, often using genetic testing.
About 19% of foxes and 18% of jackals in southwest Iran have at least one type of ectoparasite, mainly fleas.
26 citations,
September 1969 in “The American journal of medicine” Cronkhite-Canada Syndrome often leads to death within 6-18 months.
7 citations,
December 2021 in “Journal of The American Academy of Dermatology” COVID-19 can cause hair loss starting as early as 18 days after infection.
2 citations,
January 2019 in “International Journal of Medicine in Developing Countries” Telogen Effluvium is a common hair loss condition, particularly in women, with no specific FDA-approved treatment, and recovery can take up to 18 months.
November 2009 in “Actas dermo-sifiliográficas/Actas dermo-sifiliográficas” Hair transplantation effectively treated a bald patch in an 18-year-old woman with Temporal Triangular Alopecia.
May 2017 in “Journal of The American Academy of Dermatology” Finasteride 1 mg/day effectively treats hair loss in men aged 18-41 and over 41; DEET lotion works better than herbal insect repellents; combined tattoo removal technique shows no extra benefits.
March 2000 in “The Journal of pharmacy technology” Finasteride effectively treats mild to moderate hair loss in men aged 18-41, with some side effects.
September 2021 in “Pediatrics in review” A baby with KID syndrome died from infections and organ failure at 18 months old.
34 citations,
November 1987 in “Archives of Dermatology” Oral minoxidil helps hair regrowth in 80% of alopecia patients, but only 18% see cosmetic improvement.
26 citations,
March 1986 in “Clinical and Experimental Dermatology” Scalp hair grows at 0.37 mm/day, forearm hair at 0.18 mm/day, and thigh hair at 0.30 mm/day, with no significant differences found in people with certain hair conditions.
3 citations,
January 2018 Starting a company for quinoa-based hair care products is feasible and may become profitable after 18 months.
3 citations,
March 2012 in “Actas Dermo-Sifiliográficas” An elderly man with skin amyloidosis and abnormal blood proteins was monitored without finding widespread disease after 18 months.
May 2017 in “Psychiatric news” BPH medications may increase the risk of self-harm and depression, especially in the first 18 months.
90 citations,
March 2017 in “JAMA Internal Medicine” Men over 66 taking medication for prostate enlargement have a higher risk of depression and self-harm, especially in the first 18 months of treatment.
7 citations,
September 2004 in “대한의생명과학회지” An extract made from Polygoni multiflori Radix, Angelica gigantis Radix, and Lycii Fructus was found to increase hair density and prevent hair loss in most users when applied daily for 18 months.
April 2021 in “Advances in Cosmetic Surgery” Hair restoration can be achieved through non-surgical treatments like minoxidil, antiandrogens, phototherapy, and PRP procedures, or through surgical methods like hair transplantation. Continued treatment is needed to maintain results, and full results are visible after 12-18 months.
20 citations,
January 2015 in “Journal of cosmetic dermatology” Older people's hair cuticles get more easily damaged and lose protective oils, especially in their 40s and 50s.