Solipsism syndrome is a psychological condition where an individual perceives that no one else but themselves are real. This condition is also known as hypo-egoic state, self-absorption, or egocentrism. Some may also refer to it as self-delusion, as individuals with this condition do not acknowledge the presence of others and are oblivious to their own actions' impact on others. Other possible synonyms to describe the solipsism syndrome include self-centeredness, egoism, isolation, and self-involvement. Usually, people have a basic level of concern for others' well-being. But for individuals with this condition, their world revolves around themselves, and they may find it challenging to connect with others.