A Rare Case of Oestrogen Dermatitis

Area of Science:

• Dermatology
• Endocrinology
• Immunology

Background:

• Oestrogen dermatitis is a rare condition characterized by cyclical skin eruptions linked to the menstrual cycle.
• Cyclical dermatitis presents a diagnostic challenge, often requiring exclusion of other causes.

Observation:

• A 43-year-old woman presented with an 8-year history of cyclical inguinal dermatitis.
• Standard patch testing for common allergens was negative.
• Intradermal testing with progesterone and oestrogen was performed.

Findings:

• Intradermal testing revealed a positive reaction exclusively to oestrogen.
• This suggests oestrogen hypersensitivity as the cause of the patient's dermatitis.

Implications:

• Hormonal dermatitis, specifically oestrogen or progesterone dermatitis, should be considered in the differential diagnosis of cyclical dermatitis in women.
• Accurate diagnosis can guide targeted treatment and improve patient outcomes.
• Further research into the mechanisms and prevalence of oestrogen dermatitis is warranted.