Funny smile

Introduction Laughter is the natural expression of people's joyful emotions. Some smiles are pathological and are special symptoms of diseases. The ridiculous laugh is a kind of squinting and a strange smile on the face of a patient with facial paralysis and paralysis.

Cause

More common in patients with facial paralysis and paralysis.

an examination

Related inspection

Brain CT examination facial nerve examination

As the innervation is weakened or lost, the muscles on the side of the affected side are loose, the nasolabial folds become shallow, and the corners of the mouth are pulled to the healthy side when laughing, the mouth is skewed, and the expression is weird.

Differential diagnosis

Smirking: It is a special sneer. More common in patients with brain hypoplasia and senile dementia. This kind of laugh is not self-made, without any stimulation, can appear under any circumstances, no emotional color, so the patient is often happy, but due to the influence of intelligent obstacles, facial expressions give people a feeling of stupidity, no infection force.

Smirk: more common in patients with occult depression. Originally, such patients are depressed in their hearts, but often smirk at people, and experienced doctors often find it.

Strong laugh: Strong laughter is a kind of laugh that can't be restrained. It is more common in patients with brain organic diseases such as senile diffuse cerebral arteriosclerosis. Cranial trauma and brain tumors can also be caused.

Paroxysmal laughter: manifested as paroxysmal inability to laugh spontaneously, many people attack several times to dozens of times a day, from a few days to several weeks, each episode lasts tens of seconds to several minutes, is a laugh Characteristics of sexual epilepsy. In addition to laughter, the disease is often accompanied by ADHD, EEG changes (indefinite duration) and varying degrees of disturbance of consciousness.

Laughter: more common in after drinking or rickets.

Idiot: I am seen in patients with schizophrenia. Because of the abnormal function of the brain, when you laugh, you can sneer alone or laugh. For youthful schizophrenia, smirking is an important feature. But this kind of emotional instability, sometimes suddenly converging smiles, serious expressions; sometimes it is laughable and embarrassing.

Wry smile: common in tetanus patients, this laugh is not from the patient's heart, but a destructive pathological manifestation, because the sputum toxin secreted by tetanus bacillus first invades the facial muscles, causing it to contraction. of. Laughter is accompanied by symptoms such as tightness of the jaws, rigidity of the limbs and reversal of the horns.

As the innervation is weakened or lost, the muscles on the side of the affected side are loose, the nasolabial folds become shallow, and the corners of the mouth are pulled to the healthy side when laughing, the mouth is skewed, and the expression is weird.

The material in this site is intended to be of general informational use and is not intended to constitute medical advice, probable diagnosis, or recommended treatments.