[Eosinophilic cystitis of allergic origin].

Area of Science:

• Urology
• Allergology
• Pathology

Background:

• Eosinophilic cystitis is a rare, chronic bladder inflammation characterized by hematuria and eosinophil infiltration of the bladder wall.
• Current treatments like corticosteroids yield inconsistent results, necessitating investigation into underlying causes.
• Potential triggers such as parasitic infestation and allergies have been suspected but not definitively proven.

Observation:

• This study presents two cases of eosinophilic cystitis.
• In both cases, allergies to specific medications were identified as the likely cause.

Findings:

• The first patient's eosinophilic cystitis resolved after discontinuing penicillin.
• The second patient's condition improved upon withdrawal of clometacin.
• These findings demonstrate a direct link between drug-induced allergy and eosinophilic cystitis.

Implications:

• Drug-induced allergies should be considered in the differential diagnosis of eosinophilic cystitis.
• Identifying and removing causative allergens can lead to complete resolution of the condition.
• This highlights the importance of a thorough medication history in managing eosinophilic cystitis.