Periocular Paederus dermatitis mimicking preseptal cellulitis

Area of Science:

• Ophthalmology
• Dermatology
• Medical Entomology

Background:

• Periocular Paederus dermatitis is an inflammatory condition affecting the eyelids.
• It is caused by contact with Paederus beetles, known for their vesicant secretions.

Purpose of the Study:

• To describe the clinical and demographic features of patients diagnosed with periocular Paederus dermatitis.
• To highlight diagnostic considerations and treatment outcomes.

Main Methods:

• A retrospective study was conducted.
• Thirteen patients with periocular Paederus dermatitis presenting to an ophthalmology clinic were included.
• Diagnosis was based on clinical presentation including eyelid pain, hyperemia, and tenderness.

Main Results:

• The majority of patients experienced burning (85%) and epiphora (85%).
• Common clinical findings included erythematous patches and plaques with pustules (69%) on the eyelids, with similar lesions on other facial areas in 85% of cases.
• All patients showed improvement within one week with topical treatments, including wet dressings and steroid/antibiotic ointments.

Conclusions:

• Periocular Paederus dermatitis should be considered in the differential diagnosis of periocular infections and preseptal cellulitis.
• Thorough patient history is crucial for accurate diagnosis and to prevent unnecessary systemic antibiotic administration.