Objective: This study aimed to assess the possible role of dermoscopy in the diagnosis of different nail disorders compared with the clinical and histopathological diagnosis. Methods: This study included 104 patients with any nail disorders of both sex and any age. All the patients were subjected to a detailed medical history taken, clinical general examination, clinical and dermoscopic examinations of 20 nails. Potassium hydroxide examination was used to examine all patients with suspicious of onychomycosis. Histopathological evaluation was used to examine of clinically ambiguous nail disorders. Results: The most common nail diseases were onychomycosis (54.81%) followed by nail psoriasis (19.2%), and nail lichen planus (3.8%). Conclusion: Clinical evaluation was an important in diagnosis of different nail diseases. Nail dermoscopy could confirm clinical diagnosis and help in getting an accurate diagnosis of nail diseases and guide in the management of nail diseases by permitting better visualization of nail structure and pathology. Histopathological examination provided the most definitive method in reaching an accurate diagnosis due to it could provide etiologic, diagnostic, and prognostic information. There was good agreement between clinical, dermoscopic, and histopathological examinations for accurate diagnosis of different nail diseases.

Objective: This study aimed to assess the clinical efficiency of Narrow Band-Ultraviolet B (NB-UVB) phototherapy and methotrexate (MTX) therapy and their effects on serum tumor necrosis factor-alpha (TNF-α) in patients with cutaneous lichen planus (CLP). Methods: The present cohort study was carried out on 60 patients with CLP who attended the Out-patient Clinics of the Dermatology, Department, Faculty of Medicine, Faculty of Medicine, South Valley University between May 2018 and December 2019.The included patients were indiscriminately classified into two treatment groups; group A (30 patients), received NB-UVB phototherapy for three months and group B (30 patients), received MTX therapy for three months. All the patients were assessed clinically and TNF-α before and after treatments. Results: There were no statistically significant differences between the two groups of treatment regard clinical improvement after treatment (P=0.149). Regarding levels of TNF-α, there was a statistically significant difference between the two treatment groups after treatment (P=0.024). There was a statistically significant reduction in TNF-α level after treatment in the MTX group. Conclusion: This study concluded that NB-UVB phototherapy and MTX therapy were clinically effective in the treatment of patients with CLP. MTX therapy was more efficient in the reduction of TNF-α level than NB-UVB phototherapy in patients with CLP.