Muscles go weak when laughing or surprised

Overview

Episodes are brief.

Often with daytime sleepiness.

When to get medical care

Causes

Caused by narcolepsy.

OwieClear has pages on 1 condition that can cause muscles go weak when laughing or surprised. Each shows how soon to get care.

Common causes

• NarcolepsySee a doctor if it doesn't get better

  A brain condition that causes strong daytime sleepiness and sudden sleep attacks.

What you can do at home

• Keep regular sleep.

Medicines

Medicines help.

At the doctor

Sleep studies.

Questions you may be asked

• Episodes

The exam

A nerve exam.

Tests

• Sleep study

Prevention

Sleep well.

• Regular schedule

Check your symptoms

Most symptoms have more than one possible cause. The symptom checker looks at all of your symptoms together, plus your age, and shows how soon to get care.

Start the symptom checker

Related symptoms

• Brain fog or trouble concentrating
• Double vision or droopy eyelids that get worse when tired
• Headaches that keep getting worse over weeks, or with a new seizure or personality change
• Headaches, fog, or dizziness weeks after a concussion
• Memory problems
• Muscle twitching
• Muscle weakness in arms or legs
• New confusion or not acting like themselves
• Numbness or electric feelings in the body
• Shaking or tremor
• Slow movement or small handwriting
• Staring spells or losing time
• Symptoms worse in heat or hot showers
• Trouble swallowing or speech slowly changing
• Trouble walking, bladder leaks, and memory changes together