Laryngitis is an inflammation of the mucous membranes
of the larynx. Signs of laryngitis include hoarseness and loss of voice. The
most common causes are excessive meowing and a chronic cough. Both cause vocal
Laryngitis can be associated with tonsillitis, throat infections,
tracheobronchitis, pneumonia, inhalant allergies, and (rarely) tumors in the throat. The lining of the larynx is not
coated with cilia. Therefore, mucus frequently accumulates in the larynx.
Exaggerated throat clearing is needed to dislodge it. This further irritates
the larynx and lowers resistance to infection.
Cats can develop a fear of people they don’t know for many reasons. Companion felines have unique personalities, and some are just more outgoing than others. However, if a cat is calm and friendly with his family but afraid of visitors, it’s often because he didn’t have enough experience meeting new people when he was very young. To be social and comfortable with all kinds of people, a cat must have frequent opportunities to meet numerous new and different people in low-key, pleasant circumstances...
Treatment: Laryngitis due to excessive meowing usually responds to removing
the cause of the cat’s anxiety or distress. If the problem is due to
prolonged coughing, seek veterinary
attention to investigate and eliminate the cause of the chronic cough.
WebMD Veterinary Reference from "Cat Owner's Home Veterinary Handbook"