[1] Chronic cases may occur due to smoking, tuberculosis, allergies, acid reflux, rheumatoid arthritis, or sarcoidosis.

[1] Other conditions that can produce similar symptoms include epiglottitis, croup, inhaling a foreign body, and laryngeal cancer.

Speakers may experience a lower or higher pitch than normal, depending on whether their vocal folds are swollen or stiff.

[1][9] They may also have breathier voices, as more air flows through the space between the vocal folds (the glottis), quieter volume,[10] and a reduced range.

[3] Chronic laryngitis may also be caused by more severe problems, such as nerve damage, sores, and polyps, or hard and thick lumps (nodules) on the vocal cords.

[11] Diagnosis of different forms of acute laryngitis include: The larynx itself will often show erythema (reddening) and edema (swelling).

[1] These include: Treatment is often supportive in nature, and depends on the severity and type of laryngitis (acute or chronic).

[1] General measures to relieve symptoms of laryngitis include behavior modification, hydration, and humidification.

Vocal hygiene involves measures such as resting the voice, drinking sufficient water, reducing caffeine and alcohol intake, stopping smoking, and limiting throat clearing.

[1] In general, acute laryngitis treatment involves vocal hygiene, painkillers (analgesics), humidification, and antibiotics.

[1][5] The suggested treatment for viral laryngitis involves vocal rest, pain medication, and mucolytics for frequent coughing.

[1][7] Behavioral management involves aspects such as: Anti-reflux medications may be prescribed for patients with signs of chronic laryngitis and hoarse voice.

[25] In viral laryngitis, symptoms can persist for an extended period, even when upper respiratory tract inflammation has been resolved.

[1] If laryngeal symptoms last for more than 3 weeks, a referral to a physician should be made for further examination, including direct laryngoscopy.