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Eczema and psoriasis are two of the most common conditions treated by DermatologistOnCall’s online doctors. That’s not surprising as 32 million Americans will develop eczema in their lifetime, and more than 7 million live with psoriasis. Even though approximately 10% of the population will face one or both of these conditions at some point, there is still a lot of misunderstanding when it comes to the disorders.

Phototherapy, or light therapy, uses ultraviolet (UV) light for its healing effects. For nearly a century, it's been used to treat chronic skin conditions like psoriasis, vitiligo, and severe eczema. Thanks to innovations in telemedicine, patients can now take care online and take phototherapy home.