A few years ago I met a fellow at a party and he told me a story about a house he'd lived in as a young man. The man felt the house was haunted and he'd had a number of unpleasant experiences there. I wasn't there, I didn't see the things he'd seen, and I had no similar experiences to draw from but one thing that was abundantly clear to me was that something had happened in that home/that time of his life and whatever that something was, it had frightened the man quite deeply.

Are there such things as ghosts? I don't know. If there is and you saw one, then I guess that wouldn't count as a visual hallucination at all. If that's the case then perhaps you would be better off to seek a different kind of assistance. Assuming however that you didn't see a ghost, that maybe what you saw was something else, I'll share the following with you and you can decide if it fits...

... there is a man, made of shadow that has been bothering me for a number of years now...more active since we moved to our present house. He doesn't speak, but is large and his essence is very dark. He is so dark that he shows up black in the dark of night with no lights. He menaces me, I'm very afraid of him, I know that he can/means to do harm.

That passage reminds me very much of this one...<blockquote>In many instances, a woman will choose to project her own inner masculine outward. She will live her life half-full; her animus will slumber within her. For awhile. Then, she will often see him awaken with anger for being denied.

When ignored and left unexpressed, the animus will become negative, the shadow animus, the demon. You will hear his voice in her tone of bitterness, the scathing sarcasm, her criticism of men, or her edgy controlling anger.

This woman may suffer a deep depression or dream of a dark controlling lover, a "Hit Man", a vampire, a haunted lover who drains her of her energy and life. She feels he is "evil" and will harm her. When a woman represses the energy of her animus, he does become threatening. His energy turns destructive. When creativity is repressed, it turns against itself.

Source: A Witch's Book of Dreams</blockquote>
I came across that passage several years ago because I was having nightmares about a male figure and was looking for some answers for myself. I would later discover that figure represented some frightening things to me that I had pushed away from consciousness. In a way, he was a helpful figure because he represented the fear I wasn't in touch with and therefore, hadn't healed from -- although you would have had a lot of trouble convincing me his intent was helpful at that time.

Before I go any further it would probably be helpful to review what the animus is...<blockquote>Animus: The inner masculine side of a woman. (See also anima, Eros, Logos and soul-image.)

Like the anima in a man, the animus is both a personal complex and an archetypal image.

Jung described four stages of animus development in a woman. He first appears in dreams and fantasy as the embodiment of physical power, an athlete, muscle man or thug. In the second stage, the animus provides her with initiative and the capacity for planned action. He is behind a woman's desire for independence and a career of her own. In the next [third] stage, the animus is the "word," often personified in dreams as a professor or clergyman. In the fourth stage, the animus is the incarnation of spiritual meaning. On this highest level, like the anima as Sophia, the animus mediates between a woman's conscious mind and the unconscious. In mythology this aspect of the animus appears as Hermes, messenger of the gods; in dreams he is a helpful guide.

Source: The Jung Lexicon</blockquote>
Anyway, perhaps you would find it helpful to approach this figure as if he is a dream figure that has somehow leaked into your ordinary day-to-day consciousness. Assuming that this figure is a representation of your animus, the goal is to create a positive relationship with "him". Do be assured that the animus changes from a frightening and intimidating figure in the process to one that you'd actually want to have a positive relationship with.

If you are in an area that has Jungian trained therapists you may find it beneficial to meet with one, if only for a short while to explore the meaning of this figure in your life. There is also plenty on the net about Jungian psychology as well as a wealth of books on the subject. You may enjoy Marion Woodman's The Ravaged Bridegroom as well as Clarissa Pinkola Estes book, Women Who Run With the Wolves.

I don't know if that will "fit" for you or not, but it does at least give you another perspective to consider.