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    Glossary Patch Testing

    diagnostic method to identify skin allergies to specific substances

    Patch testing is a diagnostic procedure used to identify substances that cause allergic contact dermatitis. Small amounts of potential allergens are applied to patches, which are then placed on the skin, usually on the back, for 48 hours. The skin is examined for reactions at 48 hours and again at 72-96 hours to determine if an allergy is present.

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    Research 30 of 1000+

    1. Patch testing with hair cosmetic series in Europe: a critical review and recommendation Contact Dermatitis · 2015 · 47 citations
    2. Patch testing and contact allergen avoidance in patients with lichen planopilaris and/or frontal fibrosing alopecia: A cohort study Journal of the American Academy of Dermatology · 2020 · 35 citations
    3. Photopatch and patch testing in 63 patients with frontal fibrosing alopecia: a case series British Journal of Dermatology · 2018 · 24 citations
    4. Common Allergens Identified Based on Patch Test Results in Patients with Suspected Contact Dermatitis of the Scalp Skin appendage disorders · 2016 · 16 citations
    5. Patch Testing in Allergic Contact Dermatitis from Minoxidil Dermatitis · 2010 · 11 citations
    6. Patch tests with commercial hair dye products in patients with allergic contact dermatitis to para-phenylenediamine Indian Journal of Dermatology Venereology and Leprology · 2016 · 6 citations
    7. Patch testing procedures in patients suffering from suspected allergic contact dermatitis to minoxidil 1989 · 4 citations
    8. Influence of Atopic Dermatitis on the Dermoscopic Phenotype of Positive Patch Test Reactions: A Prospective Comparative Study Life · 2026
    9. Patch test positive results in patients with biopsy‐proven central centrifugal cicatricial alopecia Journal of the European Academy of Dermatology and Venereology · 2024
    10. Analysis of Patch Testing for Allergic Contact Dermatitis in Adults Versus Geriatrics: A 7-Year Retrospective Analysis of 342 Positive Patch Test Cases Indian Journal of Dermatology · 2026
    11. ORIGINAL RESEARCH—ENDOCRINOLOGY: Comparison of the Steady‐State Pharmacokinetics, Metabolism, and Variability of a Transdermal Testosterone Patch Versus a Transdermal Testosterone Gel in Hypogonadal Men ˜The œjournal of sexual medicine · 2005 · 38 citations
    12. Ethanol Patch Test—A Simple and Sensitive Method for Identifying ALDH Phenotype Alcoholism Clinical and Experimental Research · 1989 · 66 citations
    13. Testosterone for Low Libido in Postmenopausal Women Not Taking Estrogen: A Phase III Research Study of Female Sexual Dysfunction in Women on Testosterone Patch Without Estrogen (APHRODITE) Obstetrical & Gynecological Survey · 2009 · 4 citations
    14. Delayed hypersensitivity reaction to intralesional triamcinolone acetonide following treatment for alopecia areata. Intradermal testing. Journal of Dermatological Case Reports · 2015 · 6 citations
    15. The use of a transscrotal testosterone delivery system in the treatment of patients with weight loss related to human immunodeficiency virus infection ˜The œAmerican journal of medicine · 1999 · 64 citations
    16. Cardiovascular risks and elevation of serum DHT vary by route of testosterone administration: a systematic review and meta-analysis BMC Medicine · 2014 · 122 citations
    17. Testosterone Therapy in Premenopausal Women Seminars in Reproductive Medicine · 2006 · 10 citations
    18. Patchy hair loss on the pubis--a case study. PubMed · 2013 · 2 citations
    19. Loose anagen hair syndrome presenting as patchy hypotrichosis – clinico-trichoscopic correlation International Journal of Dermatology Research · 2026
    20. Testosterone in Women: Measurement and Therapeutic Use Journal of obstetrics and gynaecology Canada · 2017 · 12 citations
    21. Testosterone Treatment in Women – An Overview Current Women's Health Reviews · 2009 · 8 citations
    22. The use of testosterone after menopause The Journal of The British Menopause Society · 2004 · 5 citations
    23. Gray Patch Tinea Capitis Caused by Microsporum canis Cermin Dunia Kedokteran · 2020 · 1 citations
    24. Dissolving microneedle patch loading dutasteride microspheres for the long-acting treatment of androgenetic alopecia Journal of Drug Delivery Science and Technology · 2025
    25. Gas-propelled anti-hair follicle aging microneedle patch for the treatment of androgenetic alopecia Journal of Controlled Release · 2025
    26. Non-scarring patchy alopecia in patients with systemic lupus erythematosus differs from that of alopecia areata Lupus · 2013 · 30 citations
    27. Alopecia: what to do when the endocrine skin tests are normal? British Small Animal Veterinary Association eBooks · 2021
    28. ADRENOCORTICAL ADENOMA AS A CAUSE OF HYPERANDROGENISM SYNDROME IN A GIRL: THE PATH TO DIAGNOSIS Medicine theory and practice · 2024
    29. 55 cases of allergic reactions to hair dye: a descriptive, consumer complaint‐based study Contact Dermatitis · 2002 · 98 citations
    30. Contact dermatitis to Minoxidil Contact Dermatitis · 1985 · 34 citations