A head massage can also be called a scalp massage.
There are many ways to massage the head, each with its own nuances and benefits. The terms provided in the reference, such as rub-down, rubbing, manipulation, and kneading, all describe the actions involved in various massage techniques, including head massage. They aren't necessarily alternative names for a head massage itself, but rather describe the methods used within a head massage.
Other terms like reflexology, shiatsu, and acupressure represent specific massage modalities that may include a head massage as part of the treatment, but aren't synonyms for a head massage alone. Similarly, chiropractic treatment might involve manipulation of the neck and head, but is a broader medical practice.
Therefore, while various techniques can be employed during a head massage, a simple and direct alternative name is a scalp massage, focusing on the area being massaged.