Definition

Inflammation of the laryngeal mucosa and submucosa

●Clinically severe cough, throat sensitivity, and swelling are the main features.

●Category and fibrinous.

etiology

Physical factors

--cold stimuli

--injury to foreign bodies, such as bones, needles, pins, and external stimuli

--warm stimulation

--excessive screaming

●chemical factors

--volatile chemical materials

- -Exhaust gas from the breeding farm

--Spray with high concentration of disinfectant, etc.

● Biological factors: certain viral or bacterial infections, such as canine distemper virus, feline rhinotracheitis virus, staphylococcus, streptococcus, etc.

●Other factors: spread of inflammation in adjacent organs

symptoms

●Acute laryngitis

-- Mainly manifested as cough. Affected dogs and cats are hoarse or completely silent, and their expressions are extremely painful. At the beginning of the disease, a rough, short and powerful painful dry cough can be heard, and later it turns into a soft wet cough.

--The larynx is highly sensitive to palpation, coughing in bursts, often followed by vomiting

--Laryngeal stenosis can be heard on auscultation of the larynx

--In mild cases, there are no obvious systemic symptoms

--In severe cases, the body temperature rises, the spirit is depressed, the lymph nodes near the throat are swollen, and the head is reluctant to turn

--Larynx When the body is edema, the dog and cat suffer from inspiratory dyspnea, mouth breathing, and in severe cases, may suffocate to death

Chronic laryngitis

-- Thickening of the laryngeal mucosa, granular or nodular swelling, hyperplasia of connective tissue, narrowing of the laryngeal cavity

Laryngoscopy

●Lightly anaesthetize the animal, and then perform the examination

--Inspect the surfaces on both sides of the vocal cords, The left and right piriform sinuses, lateral vocal cords, sublingual, larynx and other parts, focusing on their shape, color and movement.

Diagnosis

●Based on cough, throat sensitivity, etc. Clinical symptoms, combined with laryngoscopy can be diagnosed

●Note the difference from rhinitis, pharyngitis and bronchitis

--rhinitis: increased nasal fluid, more difficult inhalation, but generally no cough

--pharyngitis: mainly manifested as dysphagia, not severe cough

--Bronchiolitis: Insensitive throat, no simple dyspnea symptoms, cough less severe than laryngitis

Treatment

Remove the cause and place the affected dog or cat in a warm, clean environment , while feeding liquid or soft food

Antitussive, expectorant, pain reliever

-- For dry cough, codeine phosphate: 1.1-2.2 mg/kg.w for dogs, 3-4 times/day, subcutaneous injection; 0.25-4 mg/kg.w for cats, orally, 1-2 times a day. Emergency syrup: 20 ml each time, orally, 3 times a day. Compound Licorice Tablets, 1~2 tablets, 3 times a day

-- Cough medicine should not be used for wet cough. When there is too much phlegm, ammonium chloride can be taken orally, 0.1-0.2g each time, once a day

Treatment

●Anti-bacterial and anti-inflammatory

--Intramuscular injection of penicillin, 800,000 IU/time, 2 times/day

--When the cough is severe, 1% procaine 2ml and penicillin 200,000 IU can be mixed and injected into the larynx, 2 times a day, alternately on the left and right sides Carry out

Physical therapy: in the early stage of the disease, ice packs can be used to cool the throat to constrict blood vessels, reduce laryngeal edema, and then apply heat to promote inflammation subsides

● Tracheotomy can be performed when the throat is severely blocked, causing difficulty in breathing.