Obliviousness plagues many human interactions, though with the degrees of oblivion which predominate, 'interactions' is an exaggeration! There may be no real interactions involved! People suffering from it are so immersed in their own little worlds, they're virtually unaware of others' existence, except as inconveniences and obstacles to their own.
This may exceed emotional illiteracy, being more emotional retardation orstunted emotional development. In cases in which there had been emotional responsiveness prior to damaging influences it may be emotional disaffection or paralysis.
When parents or caregivers of youngsters have become self-absorbed, inattentive and oblivious to the emotional needs of their children, it becomes a generational malady.
Those with oblivion to others on highways, sidewalks, in malls and parking lots neither see nor care whether they're blocking the way, posing danger or setting up obstacles for others sharing the same areas and spaces.
The toll(s) of these consequences? Take note of the rise in crimes against persons and institutions, senseless killings, disrespect and verbal abuse which is prevalent everywhere, including the cyber-world. These are all responses to being balked in their own pursuit of self-absorption and frustration of their normal oblivion to anyone or anything else interfering with it.
Once taken-for-granted "common decency" would draw blank stares if mentioned as a casualty of emotional illiteracy, along with kindness, personal grit, sense of responsibility and numerous losses in personal character leading to a snowball of further consequences.
The good news is that not everyone is infected. And fortunately, the problem is more behavioral than genetic, so it may be reversible, which may not be so in the case of intellectual lagging, in which there is a ceiling on improvement set by people's natural abilities.