* Nervousness or anxiety. When people are feeling nervous or anxious, they may laugh as a way to relieve tension. This type of laughter is often accompanied by other physical symptoms, such as sweating, shaking, or blushing.
* Excitement or joy. People may also laugh manically when they are feeling excited or joyful. This type of laughter is often accompanied by positive emotions, such as happiness, contentment, or satisfaction.
* Hysteria. Hysteria is a condition characterized by uncontrollable emotional outbursts, including laughter. Hysterical laughter is often a response to extreme stress or trauma.
* Substance abuse. Some drugs and alcohol can cause people to laugh manically. This type of laughter is often accompanied by other side effects, such as impaired judgment, slurred speech, or disorientation.
* Mental illness. Manic laughter can also be a symptom of mental illness, such as schizophrenia or bipolar disorder. These disorders are characterized by changes in mood, thinking, and behavior.
Manic laughter should not be ignored, especially if it is accompanied by other physical or mental health symptoms. If you are experiencing manic laughter, it is important to talk to a doctor or mental health professional.