Narrowband UVB (NBUVB) and PUVA are types of phototherapy. Narrowband UVB therapy, utilizing artificial ultraviolet B rays at a wavelength of 311 nm, has emerged in recent years as a safe and effective option for treating various skin conditions such as psoriasis and atopic eczema. Key advantages of this method include the absence of a need for oral medication, its applicability to pregnant and breastfeeding patients, individuals with liver and kidney conditions, its safety for children, no requirement for special eye protection after treatment, cost-effectiveness, lower risk of skin cancer, and the absence of a need for hospitalization. These characteristics have led to narrowband UVB being increasingly preferred by physicians.