Dreamers almost always mention the age their brother appeared at, and that detail usually tells them more than any general reading of the sibling image.
People describing this dream volunteer the age before anything else: he was seven, he was as he is now, he was somehow both. Interpreters take that seriously, because a sibling who appears at a much younger age is generally read as belonging to the period of life he is dressed in rather than to the present one.
A brother in a dream is read on two levels at once. There is the actual man, with the actual relationship attached, and there is the position he holds: shared history, rivalry, being measured against someone raised in the same house. The tradition tends to read protectiveness and competition as the two poles of the image, and most dreams land somewhere between them.
Closeness, distance, rivalry or loss in the real relationship will shape this dream far more decisively than any general entry could, which is why the sibling entries in older dream books are among the least useful pages in them.
Arguments with a sibling are among the most reported versions and are typically read as unfinished business rather than as anything about the present. Rescuing him, or being rescued, is read as the loyalty side of the same relationship. Searching for a brother in a crowd and failing to find him is a distinct scenario, usually read as distance that has grown without either party deciding on it.
Dreaming of a brother who does not exist is common enough to have its own reading. Interpreters generally treat the invented sibling as a version of yourself, or as the ally the dreamer would want in a difficult situation. Whether that fits is for the dreamer to judge, and dream interpretation offers nothing more authoritative than a suggestion here. The dream reports on feeling, not on the person himself or on what he is doing.


