November 2025 in “Contact Dermatitis” This study reported a case of acute kidney injury and toxic contact dermatitis in a 25-year-old woman following exposure to a glyoxylic acid-containing hair straightening product, highlighting glyoxylic acid's potential role in cutaneous and renal complications and underscoring the need for stronger regulation and awareness.
14 citations
,
January 2015 in “Skin appendage disorders” This case report details two women with female pattern hair loss who experienced severe scalp allergic contact dermatitis from minoxidil, one due to the active ingredient and the other due to the vehicle.
19 citations
,
February 2015 in “Contact dermatitis” Avoiding certain fragrances improved the man's skin condition.
29 citations
,
May 2007 in “British Journal of Dermatology” This report describes five patients who experienced hair loss with discomfort and scarring after undergoing salon hair relaxer treatments, regardless of whether 'lye' or 'no lye' products were used.
August 2018 in “Journal of The American Academy of Dermatology” A 16-year-old girl's skin rash was likely caused by an infection and improved with topical steroids.
5 citations
,
January 2017 in “Skin appendage disorders” In this case report, the authors linked acute psoriasiform contact dermatitis of the forehead and scalp to a low-laser light cap, identifying DMDE in the fabric as a likely cause.
8 citations
,
April 2020 in “Journal of The American Academy of Dermatology” This report describes nine women who were allergic to topical minoxidil but successfully tolerated low-dose oral minoxidil without significant adverse effects, suggesting it may be a viable alternative for those with similar allergies.
4 citations
,
July 2001 in “Journal of Cutaneous Medicine and Surgery” This study suggests that oral and topical tacrolimus may effectively treat psoriasis, atopic dermatitis, and hair growth disorders, although results are mostly based on small or animal studies.
July 2026 in “International Journal of Applied Pharmaceutics” This review discusses the dermatological and systemic adverse effects of hair dye use, particularly focusing on the common allergen para-phenylenediamine, and reports no new clinical data.
January 1993 in “Side effects of drugs annual” This chapter covers various dermatological drugs, cosmetics, and topical agents, focusing on the properties and uses of propolis, but does not present new clinical findings.
16 citations
,
February 2001 in “PubMed” This study found that allergic contact dermatitis of the scalp may cause telogen effluvium, leading to mild to moderate hair loss in some patients.
98 citations
,
November 2002 in “Contact Dermatitis” This study found that adverse reactions to para-phenylenediamine in hair dye, including severe allergic contact dermatitis, may be more common than currently reported and often misdiagnosed.
16 citations
,
April 2000 in “Contact dermatitis” In this report, a 19-year-old Japanese man experienced severe and prolonged urticarial reactions following treatment with diphenylcyclopropenone for alopecia universalis, emphasizing the need for caution with potent sensitizers.
5 citations
,
January 2014 in “Hospital pharmacy” This case report suggests that frequent application of diphenylcyclopropenone 2% solution to the scalp for alopecia areata may lead to scalp angioedema.
March 2007 in “The FASEB Journal” This observational study reports a striking correlation between the use of henna hair dye and a specific pattern of hair loss, termed "hennapecia," but calls for experimental research to determine causality.
35 citations
,
August 2001 in “Journal of Cutaneous Medicine and Surgery” This paper reviews the use of tacrolimus for various conditions, noting its effectiveness in treating certain skin disorders but highlighting that some findings remain anecdotal due to limited case numbers.
August 2024 in “Journal of Marine Medical Society” This case report highlighted the use of dermoscopy not only for diagnosing skin disorders but also as an educational tool to inform patients about the harmful effects of unqualified medical advice, particularly highlighting the quackery issue in dermatology.
January 2003 in “American Journal of Clinical Dermatology” In 2002, various skin reactions were reported due to different drugs, including allergies, hair loss, skin lesions, and other skin conditions.
1 citations
,
December 2019 in “Acta Medica Medianae” This article discusses connubial contact dermatitis, emphasizing its frequent misrecognition and the importance of identifying and eliminating the underlying causes for effective treatment.
January 2010 in “Actas Dermo-Sifiliográficas” A woman was allergic to quinine in her anti-hair loss lotion.
7 citations
,
January 2009 in “International Journal of Trichology” In this study, researchers found that dermoscopy does not provide distinguishing features for diagnosing scalp contact dermatitis from topical minoxidil compared to other causes of severe scalp itching.
38 citations
,
June 2005 in “Contact Dermatitis” This case report describes a patient with an allergic sensitization to minoxidil, indicating that such patients should pursue alternative therapies to treat androgenetic alopecia.
17 citations
,
October 2003 in “Contact dermatitis” Glycerin in hand cream can cause allergic skin reactions.
8 citations
,
September 2004 in “Contact dermatitis” Avoiding dyed wigs and clothing improved severe allergic reactions in a woman treated with diphencyprone.
This case study highlights a patient with alopecia areata who experienced telogen effluvium after regrowth following diphencyprone-induced contact dermatitis.
16 citations
,
December 2016 in “Skin appendage disorders” This study analyzed patch test results to identify allergens causing scalp contact dermatitis, finding nickel, cobalt, and balsam of Peru among the most common in the patient population.
March 2026 in “Journal of Sustainable Veterinary and Allied Sciences” In this case report, a 5-year-old female German shepherd diagnosed with canine babesiosis and ehrlichiosis fully recovered after receiving parenteral treatment for these infections and topical therapy for dermatitis at the University of Ilorin's Veterinary Teaching Hospital.
15 citations
,
July 2002 in “Australasian Journal of Dermatology” In this case report, two plywood mill workers developed allergic contact dermatitis due to exposure to uncured phenol-formaldehyde resin, not sawdust as initially suspected.
6 citations
,
April 2025 in “Communications Biology” In this study, researchers used a murine model of irritant contact dermatitis to reveal that hair follicle regions serve as key sites for neutrophil transepidermal migration, which requires MMP-9 expression stimulated by dermal monocytes.
September 2024 in “Journal of the American Academy of Dermatology” ChatGPT-4 can help with allergic contact dermatitis but shouldn't replace expert doctors.