Is the pattern of interaction among you and your (full, half-, step-, foster, and adopted) siblings associated with significant impairment in individual or family functioning?
Is the pattern of interaction among you and your (full, half-, step-, foster, and adopted) siblings associated with development of symptoms in one or more of the siblings?
Is the sibling relational problem affecting the course, prognosis, or treatment of a sibling's mental or other medical disorder?
Based on your answers, it is unlikely that you have a sibling relational problem.
Unfortunately, you are displaying the signs typically seen among individuals who have a sibling relational problem. Sibling relationships are a fundamental part of child development, because they are the child’s first social network. With siblings children will learn how to build a relationships and to develop social skills. Besides, the quality of relationships between siblings can predict mental health later in life. Conflict between siblings is inevitable, however, some siblings may not become successful at navigating sibling conflict. Luckily, there are several mental health professionals that can help you and your family through sibling issues.
https://www.goodtherapy.org/learn-about-therapy/issues/sibling-issues
DSM-5

Ambra null
Hi! I’m Ambra Marcucci. I have a PhD in Psychology and Justice and I have been working as a content writer for over 2 years. Besides writing, I am an extremely passionate American Football player, and I am studying to become a sports agent. I’m originally Dutch and speak Italian, English and Portuguese as well. You can find me on LinkedIn at: www.linkedin.com/in/ambra-marcucci-67505175/