Phototherapy and indoor tanning differ in many ways.
The FDA approves medical phototherapy devices, and experts consider the therapy a safe and effective treatment for eczema and other skin conditions. A dermatologist monitors the phototherapy process to minimize potential risks.
The FDA does not monitor indoor tanning, and dermatologists do not recommend it as safe because the process does not typically occur under medical supervision or regulation. Experts associate several serious health risks with indoor tanning.