High D, Low Certainty

Clinical research in dermatology highlights novel therapeutic approaches and evolving diagnostic challenges. High-dose oral vitamin D supplementation, ranging from 100,000 to 200,000 IU, offers a safe, low-cost intervention for managing toxic erythema of chemotherapy and radiation dermatitis by potentially modulating inflammatory processes. In the treatment of cutaneous lichen planus, baricitinib proves more effective than hydroxychloroquine, though clinicians must strictly adhere to weight-based hydroxychloroquine dosing to mitigate retinal toxicity risks. Meanwhile, rising nickel sensitivity, now affecting nearly 27% of patients, underscores the impact of lifestyle trends like body piercing. Furthermore, the high frequency of "dermatitis unspecified" diagnoses and the questionable clinical relevance of surfactant patch test results suggest a need for more robust outcomes data to validate current testing protocols and improve long-term patient clearance rates.