Dr. Ratu focuses on illuminating skin health, reviewing NHS patients at Modality Dermatology Clinic and private patients at The Vesey Private Hospital. He specialises in diagnosing and managing common skin disorders, including benign conditions like melanocytic naevi, seborrheic keratoses, and cysts, as well as malignant conditions such as melanoma, squamous cell carcinoma, and basal cell carcinoma.