When an INTJ (Introverted, Intuitive, Thinking, Judging) is mad, there are several signs and behaviors that can indicate their anger. However, it's important to note that each individual is unique, and these signs may vary from person to person. Here are some common indicators that an INTJ may display when they are mad:

1. Withdrawal: INTJs are known for their introverted nature, and when they are angry, they may withdraw from social interactions. They might isolate themselves and prefer to be alone rather than engaging with others.

2. Silence: INTJs tend to be quiet and reserved individuals, and when they are mad, they may become even more silent. They may choose not to express their anger verbally and instead keep their thoughts and emotions to themselves.

3. Intense focus: When an INTJ is angry, they may become extremely focused on the issue or problem that caused their anger. They might spend a lot of time analyzing the situation, trying to find a logical solution or understanding the root cause of their anger.

4. Critical and direct communication: INTJs are known for their direct and straightforward communication style. When they are mad, they may express their anger through critical and blunt remarks. They might point out flaws or mistakes in others' actions or ideas without sugarcoating their words.

5. Logical arguments: INTJs rely heavily on logic and reasoning, even when they are angry. They may present logical arguments to support their point of view and may expect others to do the same. They might become frustrated if others cannot provide logical explanations or fail to understand their perspective.

6. High standards: INTJs have high standards for themselves and others. When they are mad, they may become more critical of others' performance or behavior, pointing out any perceived shortcomings or failures.

7. Emotional detachment: INTJs are typically not very in touch with their emotions, and this can be even more pronounced when they are angry. They may appear emotionally detached or unresponsive, as they try to suppress or control their anger.

8. Problem-solving mode: INTJs are natural problem solvers, and when they are mad, they may channel their anger into finding solutions. They might focus on resolving the issue at hand rather than dwelling on their anger.

9. Increased perfectionism: INTJs are known for their perfectionistic tendencies, and when they are mad, they may become even more focused on perfection. They might expect others to meet their high standards and may become frustrated if they perceive any shortcomings.

10. Physical signs: While INTJs may not always show obvious physical signs of anger, some individuals may display subtle cues such as tense body language, clenched fists, or a stern facial expression.

It's important to remember that these signs are generalizations and may not apply to every INTJ. Additionally, it's crucial to communicate openly and directly with an INTJ to understand their feelings and address any issues that may have caused their anger.