Contact Dermatitis Caused by Topical Minoxidil: Allergy or Just Irritation

This review assessed the safety of oral antiandrogen treatments for female androgenetic alopecia, finding spironolactone to be potentially safe even in high-risk populations, but indicated ongoing uncertainty regarding other medications, especially for patients with a history of gynecologic cancers.

This source highlights new developments in treating androgenetic alopecia, including low-dose oral minoxidil and advancements in photobiomodulation, platelet-rich plasma, and hair transplantation techniques, providing clinicians with more options.

This study describes androgenetic alopecia as a common non-scarring hair loss condition primarily influenced by genetic factors and androgen sensitivity, notably impacting psychosocial well-being, especially in females and younger males seeking treatment.

In this retrospective study, researchers from the University of Bologna observed that trichoscopy can aid in diagnosing allergic scalp contact dermatitis, with key findings including common trichoscopic patterns of erythema, white scales, arborizing vessels, and simple red loops in 12 patients diagnosed with the condition.

This study found a high discontinuation rate of topical minoxidil among patients with androgenetic alopecia, largely influenced by short treatment duration, lack of efficacy, and adverse effects.

This paper presents the first reported case of Acute Localized Exanthematous Pustulosis linked to topical minoxidil use, suggesting a contact-induced hypersensitivity reaction as a potential mechanism.

This case report describes a 27-year-old woman who experienced facial swelling due to allergic contact dermatitis from using minoxidil 5% foam.

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.

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.

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.

This review discusses the side effects associated with topical minoxidil in treating androgenetic alopecia, noting propylene glycol as a common allergen and suggests alternatives for affected patients but reports no new clinical results.

Minoxidil can cause deadly skin reaction; monitor patients closely.

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.

A man had an allergic reaction to minoxidil, which stopped after he discontinued use and started corticosteroids.

This case report describes a patient with an allergic sensitization to minoxidil, indicating that such patients should pursue alternative therapies to treat androgenetic alopecia.

This article reviews the mechanisms by which minoxidil stimulates hair growth and reports no new clinical findings.

This case report describes a 24-year-old woman with androgenetic alopecia who developed sensitivity to topical minoxidil and later to saw palmetto after using a minoxidil and retinoic acid preparation.

Minoxidil 5% caused skin discoloration in a man using it for hair loss.

Minoxidil can cause skin allergy; use alternative solvents or treatments if allergic.

Minoxidil can cause pustular allergic reactions on skin.

This study found that minoxidil penetration through the skin increased with higher ethanol content and occlusion, with the highest penetration observed at 90% ethanol.

This article reviews previous cases and reports of allergic contact dermatitis from minoxidil but does not provide new clinical findings.

Some people using minoxidil for hair loss developed an allergic skin reaction, often related to an ingredient that helps minoxidil work better.

Minoxidil can cause severe skin reactions like Stevens-Johnson syndrome in rare cases.