FACTORS CONTRIBUTING TO CHRONIC URTICARIA/ANGIOEDEMA AND NUMMULAR ECZEMA RESOLUTION - WHICH FINDINGS ARE CRUCIAL?

When working with dermatology patients, the question sometimes arises which diagnostic tests and tools should be used for workup, particularly in cases of chronic urticaria (CU) and discoid nummular eczema, where the treatment of associated systemic diseases and infections may be crucial for patient outcome. The aim was to investigate retrospectively the influence of associated diseases on skin disease outcomes based on medical records of CU and nummular eczema patients in comparison to controls. We included patients admitted to our Dermatology Department over a 6-year period and analyzed their laboratory findings, related factors and outcomes recorded after two years of workup and treatment. Compared to controls, CU patients had a significantly higher prevalence of positive findings (p=0.020), confirmed allergies (p=0.006), increased IgE (p=0.011) and pathologic thyroid findings (p=0.049), whereas nummular eczema patients only had significantly higher positive findings (p=0.046). Meaningful regression of both dermatoses was recorded after treatment of associated diseases, with significant benefit from treatment. This indicated that the diagnosis of associated infections (particularly and urogenital infections), confirmed allergies, endocrine disorders (particularly of thyroid gland in CU patients) and serum malignancy markers could play a crucial role, as their treatment may improve disease outcomes.