A person with Neptune in the 8th house not only feels another person, but senses their thoughts, feelings, and mood.
The 8th house is the house of other people's resources (energy, money). It is the house of death and conception (as the gateway to another world). It is the house of crises. One of the qualities of Neptune is high sensitivity and receptiveness. And since the 8th house has a certain boundary between the material and the subtle world, a person with Neptune in the 8th house not only feels another person, but senses their thoughts, feelings, and mood. And in crisis situations, this ability can manifest as telepathy.
Therefore, this supersensitivity can be well realized through the professions of the 8th house, in order to have the opportunity to help people. Also, such a position of Neptune gives the prerequisites to be a good psychologist or medium. There may be a tendency towards mysticism, the occult, and working with the subconscious.
Financially, this is a difficult position for Neptune, as there is a high probability of deception, unless the person's activity is connected with Neptune. The owner of Neptune in the 8th house may have unrealistic expectations regarding money, inheritance, or some financial assistance from others. Therefore, one needs to be more careful with investments, loans, and guarantees, as they may lend and forget about it, and people may take advantage of this. But on the other hand, money can also come out of nowhere. As they say - "They weren't expected, but they fell out of nowhere." Of course, this is not always the case, but such an incident can happen: from the section "the distant cousin died," you didn't even know about him. But I repeat, for the most part, it is deception or an inability to handle large sums of money.
Health... Great susceptibility to infections, food poisoning. It is necessary to avoid alcohol abuse or dubious "substances." Due to high susceptibility to other people's energies, such a person can take on a lot, which can lead to psychological exhaustion. Therefore, grounding practices, cleansing, and work with the internal state are necessary for them. Meditations, spiritual practices, work with minerals that suit them, and being in nature as often as possible are useful.