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Board-certified dermatology


Psoriasis is a glitch in the immune system in which certain cell types are hyper-reactive and irritate the skin causing reddish scaling plaques to form on the skin’s surface. Sometimes, it can also affect the joints. A complex condition, our providers design a customized treatment plan per each individual patient.

Dr. Rosenbach was interested in learning about psoriasis even before he began his residency. He was one of the first to write a chapter in a medical textbook about how to use a medication known to reduce the immune hyper-reactivity that is the cause of psoriasis.

A typical treatment plan for psoriasis can include topicals, oral medications, or injections. Breathtaking research over the past five years reveals that diet often contributes to this condition. We’ve seen a number of patients with decades of psoriasis who have experienced dramatic improvement by altering their diets. While lasers can be effective they are not often as powerful of a tool as diet change or medications.

With the increased availability of new medications aimed specifically at the cellular causes of psoriasis, more patients than ever are experiencing improvement. Our team is excited to bring the latest research on such medications to patients. We are most gratified when we can stop psoriasis from affecting not only the skin but the joints as well.

At a Glance

Dr. Alan Rosenbach

  • Board-certified and fellowship-trained dermatologist
  • Clinical associate professor at the Keck School of Medicine of USC
  • Researcher, published author, lecturer
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