Lockjaw Average Cost

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What is Lockjaw?

Cats are more resistant to the tetanus neurotoxin than other mammals, giving them a longer incubation period than is typical. Because of this, cats often develop localized tetanus rather than generalized. Lockjaw is a serious medical condition that requires immediate treatment in order to save the cat's life.

Lockjaw, also known as tetanus toxemia, is a condition that is caused by Clostridium tetani, a neurotoxin that resides in necrotic tissue, soil, and other low oxygen environments. The neurotoxin is marked by its ability to live for long periods of time in areas with low oxygen by producing spores. When a cat comes into contact with these spores, they enter the cat's body and bind to the nerve cells, causing muscle spasms and muscle stiffening.

Symptoms of Lockjaw in Cats

Depending on how many spores were able to enter the cat's body and the quantity of toxins produced by the cat, symptoms may range from mild to severe. These symptoms include:

  • Rigid muscles at entrance site, which is typically a wound or bite mark
  • Stiff jaw and neck muscles
  • Uncoordinated gait
  • Weakness
  • Fever
  • Pain during urination
  • Mouth upright in a "grin"
  • Constipation
  • Hard, stiff tail
  • Stiff ears that are continually erect
  • Breathing problems
  • Difficulty with eating
  • Painful sensitivity to touch
  • Difficulty in opening mouth
  • Whole-body spasms triggered by a sudden noise or movement
  • Drawn-back lips
  • Whole-body paralysis
  • Death


There are two types of lockjaw:

  • Localized: Neurotoxins just affect the nerve cells in the area around the entrance site/wound
  • Generalized: Neurotoxins enter the site and spread through the nerve cells throughout the body

Causes of Lockjaw in Cats

The tetanus spores enter the cat's body through a previously acquired wound, where they germinate. Cats with deep puncture wounds are at a greater risk of contracting the spores. Once the tetanus spores enter the body, they bind to the nerve cells and block the regular transmission of nerve signals. This causes muscle stiffness and spasms to occur. Because the neurotoxin dwells in soil and the dead tissue of animals, outdoor cats are most at risk.

Diagnosis of Lockjaw in Cats

The veterinarian will need to know the cat's health history, any recent wounds or injuries, and a complete list of symptoms. The veterinarian will examine the cat, gently feeling for muscle stiffness, looking at the cat's gait and listening to the cat's lungs for any signs of breathing difficulty.

Routine laboratory tests will be performed, which include a complete blood count and a biochemical profile. These tests may show signs of infection with the presence of high or low white blood cells and the presence of creatine phosphokinase, an enzyme that increases in response to the bacterial infection. A urinalysis may also be ordered that could indicate the presence a myoglobin, a muscle protein that passes into the urine from the damaged muscles. To confirm the diagnosis of tetanus, the veterinarian will take a small sample of the fluid and tissue at the wound site. These samples will be sent to the lab for analysis.

Treatment of Lockjaw in Cats


If the tetanus is generalized, the cat will need to be hospitalized in order to receive constant care during the critical stages of treatment. Hospitalization will be necessary for three to four weeks.

Feeding Tube

Cats that are unable to open their mouths will have a feeding tube placed in order to get the nutrients and calories they need. This feeding tube will either be inserted through the nose (naso-gastric) or directly into the esophagus via a small incision in the neck (naso-esophageal). The feeding tube will remain in place until the cat is able to eat on its own.

Oxygen Therapy

Cats who aren't getting enough oxygen on their own due to muscle stiffness will be given oxygen through a nose cannula or face mask. If the muscles are too stiff to move, a breathing tube may be inserted into the cat's trachea in order to get the cat the oxygen it needs.

Fluid Therapy

If the cat is dehydrated, fluids will be administered intravenously. The cat's heart and lungs will be monitored during fluid therapy to ensure they are receptive to the fluid intake.


Several medications may be prescribed to the cat in order to treat lockjaw. A tetanus antitoxin will be given in order to bind the toxin and prevent it from affecting more nerve cells. Antibiotics will be prescribed to kill the tetanus bacteria. Muscle relaxers will be given to relieve muscle stiffness and pain. Tranquilizers may also be prescribed in order to help the cat rest, promote healing and reduce muscle spasms and stiffness. 

Wound Care

The original wound must be drained of any pus and cleaned thoroughly. Topical antibiotics may also be prescribed in order to discourage the growth of spores and promote healing.

Recovery of Lockjaw in Cats

At home, the cat will need to be placed in a low-light environment that is quiet. Because loud noises and stress can cause muscle spasms to occur, it's important to remove other animals and young children from the cat's area. Provide soft bedding in order for the cat to be comfortable while it rests. The cat will need to remain immobile while it recovers, so it's important to follow the veterinarian's instructions to care for the cat at home, including changing its position every few hours to prevent ulcers and bedsores from forming. The veterinarian will need to follow up with the cat to monitor its healing and progress. When lockjaw is treated promptly, the prognosis is good and most cats fully recover.

Lockjaw Questions and Advice from Veterinary Professionals

3 Years
Moderate condition
0 found helpful
Moderate condition

Has Symptoms

Close mouth

Hi..my cat jaw has been dislocated and after few days it’s set up in a wrong position..it’s been a year now..she is not able to intake the food from her own..any permanent solution for her

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Domestic shorthair
7 Years
Moderate condition
0 found helpful
Moderate condition

Has Symptoms


Twice this week (on separate occasions) my 7 year old male cat appeared to start to yawn but had his mouth open (almost locked in place) head slightly tilted, making a weird sound. It freaked me out both time and I rushed over to him and he seemed to snap back into a normal state. Has anyone experienced this? This is the only cat I have ever owned, so am not super familiar what this could be a symptom of (I.e., diabetes, brain tumor, epilepsy, etc.). I plan on making him a vet appointment this week.

The same is happening to my cat! He yawned one day and his jaw was stuck open and he tilted his head back and cried, but then it went back to normal. I have noticed also that if I pet his head in certain places, his jaw chatters. We were playing with a toy today, and when his mouth would open up wide it appeared to get stuck. He's in good spirits and still eating regularly (dry food too). Did you find out anything about your cat?

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7 Years
Fair condition
0 found helpful
Fair condition

Has Symptoms


My cat Cali just recently was cleaning herself, and suddenly her mouth opened wide and she let out an awful cry for a few seconds. After that she went back to her normal state, and even went over to eat food. She does have a knick on her ear from our other cat, but it does not seem infected. Could this be just a normal case of her jaw locking or could it be a condition?

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1 Year
Moderate condition
0 found helpful
Moderate condition

Has Symptoms

Jaw Spasms

I think my 1 1/2 yr old cat might have lock jaw but I'm not sure now from reading your comments. She can yawn fine and it closes together no problem and eating fine but when she tries to lick herself on her body or under her chin her jaw spasms for a moment and then she licks her lips a few times and tries again and her jaw spasms again and I think she hasn't groomed her whole body in a few days. Apart from that I haven't noticed any other parts of her in distress. Any ideas?

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domestic short hair
9 Years
Mild condition
0 found helpful
Mild condition

Has Symptoms

Jaw gets locked

My cat will be eating or will yawn and will jump up in what I assume is pain and her jaw will be stuck momentarily. Is this lockjaw or could it be something else? Plus her breath smells awful.

Dr. Michele King, DVM
Dr. Michele King, DVM
Dr. Michele King DVM
1611 Recommendations
Chainsaw may have a problem with her teeth, or the bones of her jaw, and she may be in pain. Cats need dental care the same way that people do, and it would be a good idea to have her seen by a veterinarian, as they can look at her mouth, feel her jaw, and determine what might be happening. If she needs any dental work, they'll be able to give you a better idea as to what treatment she may need.

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2 Months
Mild condition
-1 found helpful
Mild condition

Hi! I was bite by a small cat last Sunday and it does not have any soar but I have experienced of swollen legs and numbness of arms.Am I affected of cat rabies?

Dr. Michele King, DVM
Dr. Michele King, DVM
Dr. Michele King DVM
1611 Recommendations
If you were bitten by a cat and are having swelling, you need to see your doctor. A 2 month old cat is too young to carry Rabies, but you can get a nasty infection.

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