Resistant itchy lesions in a young man

Area of Science:

• Dermatology
• Infectious Diseases
• Public Health

Background:

• A young adult male developed a widespread, intensely itchy rash with nocturnal exacerbation.
• Symptoms began one month post-travel to the Dominican Republic, following unprotected heterosexual contact.
• The rash initially presented as finger patches, progressing to excoriated papules and scrotal nodules.

Observation:

• The patient had no prior history of atopic dermatitis, but his sister presented with similar symptoms.
• Standard treatments including oral antihistamines and topical corticosteroids were ineffective.
• Clinical examination revealed excoriated papules on the trunk, limbs, and hands, alongside intensely itchy scrotal nodules.

Findings:

• The clinical presentation and lack of response to conventional therapy suggested an infectious etiology rather than atopic dermatitis.
• The travel history and reported sexual contact were key epidemiological factors.
• The development of similar symptoms in a sibling warrants further investigation into familial transmission patterns.

Implications:

• This case underscores the importance of considering infectious causes, particularly sexually transmitted infections, in the differential diagnosis of widespread pruritic rashes.
• Healthcare providers should inquire about travel history and sexual practices in patients presenting with unexplained dermatological conditions.
• Early and accurate diagnosis is crucial to prevent complications and onward transmission.