[durgaa]

You might be better off looking into Spirit-Release therapy, because if it isn't caused by an actual physical deformity, it's usually (fron an occult standpoint) a spirit attachment. These attachments can follow us from other lives too - so can be there from birth.
This is not just promoted by psychics, but by some reputable psychiatrists/psychologists as well. The books below are worth reading:

Spirit Release: A Practical Handbook by Sue Allen.

"Spirit Release" covers psychic attack, curses, witchcraft, spirit attachment, possession, soul retrieval, haunting, soul rescue, deliverance, exorcism and others. The term is used by healers and psychics of all religions and traditions to define the work they do in releasing and rescuing entities found with people, on land, in buildings and objects which are then redirected to somewhere more appropriate. This comprehensive guide has been developed over many years and used as course material in the College of Psychic Studies in London. Taking a responsible and careful approach to the subject, it stresses that the process should be carried out in a compassionate way, without blame or judgment of the spirit or of the individual who is seeking help.

Soul-Centered Healing: A Psychologist's Extraordinary Journey Into the Realms of Sub-Personalities, Spirits, and Past Lives.

A remarkable journey through the hidden dimensions of our inner world . . . Soul-Centered Healing: A Psychologist's Extraordinary Journey into the Realms of Sub-Personalities, Spirits, and Past Lives When clinical psychologist Tom Zinser started working with multiple personality patients, he had no way of anticipating where his work would ultimately lead. Using hypnosis, Zinser learned how to communicate directly with the sub-personalities that, he eventually learned, exist even in healthy individuals. Oftentimes this therapeutic technique would lead to healing and psychological integration. But other times, it would lead to confusing or frustrating results. While he made substantial progress, Zinser also reached a professional impasse. The breakthrough came when Zinser was approached by Katharine Mackey, a secretary in his office, who channeled a spirit named Gerod through automatic writing. Gerod, it seemed, was interested in communicating with the psychologist. Zinser approached the suggestion of "meeting" Gerod with a cautious but curious mind, only to be astonished by the clinically useful information that Gerod provided. Gerod claimed the ability to see directly into the souls of Zinser's clients, and provided very specific guidance on how to help each one. Equally important, Gerod sketched out a map of the human soul, its structure, and destiny, far wider than models provided by clinical psychology. What started out as an experiment turned into an amazing fourteen-year collaboration with more than 650 sessions between Gerod and Dr. Zinser. These sessions enabled Zinser to breach the impasse, guiding his clients to integration at a much deeper, spiritual level. The collaboration also lead the author to a wider understanding of the soul's structure and journey, explained in this book. Soul-Centered Healing is not a book about channeling, but about the importance of seeing our own psyche in a larger context. This compelling, mind-opening account - sure to be controversial - reveals the landscape of a larger psychic and spiritual reality, of which we are a part.