Laryngitis is about.

Acute chronic inflammation disease of throat, as self disease display in flu, diphtheria,scarlet fever, whooping cough, over cooling, over loading voice, dust air, steams, gases in air, bad meal,smoking, addicted of alchokol, but chronic reason are same, as displays is constant and long.

Symptoms are temperature till 37.9 C, ache, burning throat in, dryness, scratching, foreign body feeling like, voice loosing, afonia, strong hard cough, dry later changing in expectorating with phlegm, in right cure disease display within 5-10 days, but very hard complicatioins are in babies as edema membrane covering air in throat til false croup, noise breath, cry,worry, breath stopping in failure oxygen.
Chronic laryngitis are often voice loosing, tired voice, throat hurts, coughing, hard voice, low tone, as they are rising on acuting process.
As in a children are asphyxia as croup false visit a doctor.

As at the hospital you are getting blood test, laryngoscopy, fluorograhy of breast cell, throat.
A cure are calm, not talk, stop drink alchokol, smoke, spices,drink warm milk, borzomi, gargle throat every hour of chamomile or sage, warm inhalants alkaline, warm compress on the neck, hot leg bath, avoiding eating cold, hot,spicy meal, doctor will prescribe analgesics, febrifuges or antibiotics.
Antibiotics are faringosept, hexoral, gramicidin, bioparox.
Anti coughting are sinecod, alex plus, levopront, libexin, falimint.
Analgesics, febrifuges are baralgin, pamol, aspirin.