Loneliness is the subjective experience of being alone or feeling isolated from others. It can manifest as a sense of emptiness, sadness, or disconnectedness from others.
Loneliness can occur even when someone is surrounded by others, or it can occur when someone is physically alone. It is a common human experience and can have negative effects on mental health, including depression and anxiety.
Loneliness can be temporary, such as when someone is going through a transition period or experiencing a life change, or it can be chronic, which can be more challenging to address.