Trismus, commonly called lockjaw as associated with tetanus.
It is a condition where jaw mobility is limited ,It may be caused by spasm of the mastication, Temporary trismus occurs more frequently than permanent trismus. It causes difficulty in eating, speaking, and maintaining oral hygiene, specifically inability to swallow properly, dysphagia results in an increased risk of aspiration. In some cases, trismus presents with altered facial appearance.
The condition may be distressing and painful.
Pericoronitis (inflammation of soft tissue around impacted third molar) is the most common cause of trismus.
Inflammation of muscles of mastication. It is a frequent sequel to surgical removal of mandibular third molars (lower wisdom teeth).
Temporomandibular joint dysfunction (TMD).
Fracture of the zygomatic arch.
Ankylosis of the TMJ (fibrous or bony)
Condylar fracture or other trauma.
Gaucher disease which is caused by deficiency of the enzyme glucocerebrosidase.
Giant cell arteritis
Sympathomimetic drugs, such as amphetamine, methamphetamine, MDA.
Local anesthesia (dental injections into the infratemporal fossa)
Needle prick to the medial pterygoid muscle
X-ray/CT scan taken from the TMJ to see if there is any damage to the TMJ and surrounding structures
It requires treating the underlying condition with dental treatments, speech therapy for swallowing difficulty and mouth opening restrictions, physical therapy, and passive range of motion devices.
Few homoeopathic medicine which may be helpful are as followed; Causticum, rhustox,spigelia, silicea, mezereum.etc