Gelastic is an adjective used to describe something that causes laughter. It can be used in a "funny-ha-ha context," but you're more likely to find it used in a medical context.

What is the meaning of Gelastic?

adjective. relating to or causing laughter.

Can you have a seizure from laughing?

Gelastic seizures is the term used to describe focal or partial seizures with bouts of uncontrolled laughing or giggling. They are often called laughing seizures. The person may look like they are smiling or smirking. Dacrystic seizures are focal or partial seizures when a person makes a crying sound.