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GlossaryFixed Drug Eruption (FDE)

recurrent skin reaction at the same site from specific drugs

A Fixed Drug Eruption (FDE) is a type of allergic reaction to a medication that recurs in the same location on the skin each time the drug is taken. It typically presents as a well-defined, round or oval, red or purple patch that may blister and leave a dark mark after healing. Common culprits include antibiotics, pain relievers, and other medications.

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Decoction and Fermentation of Selected Medicinal Herbs Promote Hair Regrowth by Inducing Hair Follicle Growth in Conjunction with Wnt Signaling

research Decoction and Fermentation of Selected Medicinal Herbs Promote Hair Regrowth by Inducing Hair Follicle Growth in Conjunction with Wnt Signaling

6 citations , January 2016 in “Evidence-based Complementary and Alternative Medicine”

Boiling and fermenting certain herbs can help hair grow by activating hair growth genes and pathways.

research Fixed-Drug Eruption Due to Dextromethorphan

8 citations , July 1990 in “Archives of Dermatology”

A woman had a skin reaction from a cough suppressant, dextromethorphan, which is a new cause of fixed-drug eruption.

research Coexistence of Alopecia Areata and Fixed Drug Eruption: An Uncommon Isotopic Phenomenon?

January 2026

A rare skin reaction occurred when a man took paracetamol, causing a new rash in an area already affected by hair loss.

Formulation of a Film-Coated Dutasteride Tablet Bioequivalent to a Soft Gelatin Capsule (Avodart): Effect of Gamma-Cyclodextrin and Solubilizers

research Formulation of a Film-Coated Dutasteride Tablet Bioequivalent to a Soft Gelatin Capsule (Avodart): Effect of Gamma-Cyclodextrin and Solubilizers

4 citations , May 2019 in “Asian Journal of Pharmaceutical Sciences”

Created tablet similar to Avodart using γ-cyclodextrin and solubilizers.

research Iron Deficiency and Diffuse Nonscarring Scalp Alopecia in Women: More Pieces to the Puzzle

30 citations , October 2010 in “Journal of The American Academy of Dermatology”

The conclusion suggests a possible link between iron levels and hair health in women, recommending further research on iron supplementation for hair loss.

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community 15-Year-Old Seeking Tips to Prevent Hair Loss; Norwood Level 2?

Kuba in General 47 upvotes 4 months ago

A 15-year-old is seeking advice on preventing hair loss, identified as Norwood level 2, and wants tips for growing long hair. They have consulted a trichologist who recommended specific shampoos.