Hi Christia, An unknown person in dreams may be seen in many ways. If he happens to be a young man, it means an enemy, whereas an elderly represents one’s good fate. If the elderly person appears to be strong, mean’s that dreamer will have strength, if he is weak then he represent’s one’s weakness. If an old man is seen coming towards the dreamer, it represents someone will help in the completion of a great task. If an elderly person is seen turning into young one means the dreamer will get a healthy life.
Since dream is a dream not reality, one should take the positives from it and try to unlearn with the negatives. But in any case it should not disturb the routine activities.