Facial stiffness and crooked mouth may be caused by facial nerve palsy, which can be divided into central facial nerve palsy and peripheral facial nerve palsy.
1. Central facial nerve palsy: facial nerve damage can be caused by cerebral infarction, cerebral hemorrhage, meningioma, pontine cerebellar peduncle tumor, meningoencephalitis and other factors, and the damage site is located in the lower part of the central anterior gyrus of one side of the brain or cortical medulla oblongata.
The main manifestations are paralysis of facial muscles in the lower part of the countermeasures of the lesion, shallow nasolabial folds, crooked corners of the mouth, leakage of wind in speech, etc., but the frontal line exists, and there is no abnormality in the movements of closing the eyes and frowning.
2. Peripheral facial nerve paralysis: the facial nerve can be damaged by temporal bone fracture, neonatal birth injury, diabetic neuropathy, otitis media, labyrinthitis, mumps and other factors, and the injury site is located in the facial nerve nucleus of the brainstem, or the peripheral nerves below the nucleus.
The main manifestations are paralysis of the upper and lower facial muscles on the same side of the lesion, large eye fissures, shallow nasolabial folds, crooked corners of the mouth, salivation (drooling), and the inability to successfully complete actions such as frowning, closing the eyes, and whistling.
Facial stiffness and crooked mouth is recommended to seek timely medical attention to clarify the diagnosis, and targeted treatment under the guidance of the doctor.