Antonio C. Sison MD is the first and only board certified Psychiatrist and board certified Dermatologist in the Philippines. The reason for this dual residency is his interest in the pursing the field of Psychodermatology.

Further he is a certified in Eye Movement Desensitization Reprocessing (EMDR) Therapy as well as Master Certification in Neurolinguistics Programming (NLP). He utilizes these modalities as part of his treatment approaches for patients both psychiatric and dermatological conditions.

His Basic Framework is Trauma and how this is applied in both psychological and dermatological processes through changes in the brain circuitry may place the person at risk for both psychiatric and dermatological conditions.

His main research focus is on Psychodermatology specifically exploring the possible role of EMDR in the improvement of dermatological lesions specifically psoriasis.

Presently he is Associate Professor at the Department of Psychiatry at the University of the Philippines- Philippine General Hospital (UP-PGH). He is a consultant at the Skin and Cancer Foundation Incorporated (SCFI) and visits the Dermatology Clinic of the Quirino Memorial Medical Center.