If You See Red When Faced With Rudeness, This Might Be Why
Being isolated for long periods of time as a child – whether because their parents had to work, had caring responsibilities, or had other commitments – can leave youngsters having to problem-solve alone, making them feel more stressed, anxious, and angry.
Article source: https://www.huffingtonpost.co.uk/entry/how-anger-in-adulthood-can-stem-from-abandonment-in-childhood_uk_62a35151e4b04a61734e06be