Pharyngitis causes

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Causes

The pharynx is often the first site of infection for many contagious diseases such as the common cold. This is because viruses and bacteria often settle in this part of the body after a person inhales dust or water vapor containing the microorganism. Infection can also arise when a person touches their nose or mouth after having touched an object shared with another person with the disease. The foreign invader reproduces rapidly after settling on the body tissue.

Viral sore throats

These comprise about 90% of all infectious cases and can be a feature of many different types of viral infections.

Bacterial sore throats

Group A streptococcal

See also Strep throat

The most common bacterial agent is streptococcus. Unlike adenovirus, there tends to be greater generalized symptoms and more signs to find. Typically enlarged and tender lymph glands, with bright red inflamed and swollen throat, the patient may have a high temperature, headache, and aching muscles (myalgia) and joints (arthralgia). It may be impossible to distinguish between viral and bacterial causes of sore throat.[1]

Some immune-system meditated complications may occur:

  • Scarlet fever with its vivid rash, although the milder disease seen after the 1950's suggests that the bacteria may have mutated to less virulent illness and some doctors now call this scarlatina (literally a 'little scarlet fever')
  • Historically the most important complication was of the generalized inflammatory disorder of rheumatic fever which could later result in rheumatic heart disease affecting the valves of the heart. Antibiotics may reduce the incidence of this complication to under one-third.[2]However, the incidence of rheumatic fever in developed-regions of the world remains low even though the use of antibiotics has been declining.[3][4]This may be a result of a change in the prevalence of various strains of bacteria. In underdeveloped regions, untreated streptococcal infection can still give rise to rheumatic heart disease and may be due to environmental factors, or reflect a genetic predisposition of the patient to the disease.
  • Post-streptococcal glomerulonephritis is an inflammation of the kidney. It is disputed whether antibiotics might reduce[5] the small risk of this or not.[2]
  • Very rarely there may occur a secondary infection behind the tonsils which may cause a life-threatening septicaemia (Lemierre's syndrome).

Diphtheria

Diphtheria is a potentially life threatening upper respiratory infection caused by Corynebacterium diphtheriae which has been largely eradicated in developed nations since the introduction of childhood vaccination programs, but is still reported in the Third World and increasingly in some areas in Eastern Europe. Antibiotics are effective in the early stages, but recovery is generally slow.

Causes by Organ System

Cardiovascular No underlying causes
Chemical / poisoning

Acetic acid, Grape seed extract, Sodium dichloroisocyanurate,

Dermatologic No underlying causes
Drug Side Effect

Abacavir, Abatacept Injection (patient information), Acetazolamide Oral, Acetohexamide , Aciclovir, Acyclovir , Adalimumab , Adefovir , Alefacept , Alfuzosin , Allopurinol , Altretamine , Amlodipine and Benazepril, Amikacin Sulfate , Amiloride and Hydrochlorothiazide , Amobarbital , Amphotericin B , Ampicillin Sodium , Anagrelide , Anakinra , Anastrozole , Anisindione , Anticholinergic, Antihemophilic Factor (Human) , Antihemophilic Factor (Recombinant) , Asparaginase , Atorvastatin , Auranofin , Azelastine Ophthalmic , Aztreonam , Benazepril , Bevacizumab , Bortezomib , Bosentan , Brinzolamide Ophthalmic , Budesonide Inhalation Powder , Bumetanide , Buspirone, Busulfan , Butabarbital , Butorphanol, Candesartan , Capecitabine , Captopril , Carteolol , Cefadroxil , Cefamandole Nafate , Cefazolin Sodium , Cefepime , Cefoperazone Sodium , Cefotaxime Sodium , Cefotetan Disodium , Cefoxitin Sodium , Cefpodoxime , Ceftazidime , Ceftizoxime Sodium , Ceftriaxone Sodium , Cefuroxime Sodium , Cephalexin , Cephradine , Cetuximab , Chlorambucil , Chlorothiazide , Chlorpropamide , Chlorthalidone , Cilostazol , Cladribine , Clofarabine , Clofibrate, Co-trimoxazole , Conjugated estrogens Cromolyn Sodium Oral Inhalation , Cyanocobalamin Nasal , Cytarabine , Dacarbazine , Dactinomycin ,Dapsone Danazol , Darbepoetin Alfa , Daunorubicin , Desloratadine , Desmopressin, Dexmethylphenidate, Diclofenac and Misoprostol , Diethylpropion , Diphtheria, Disopyramide , Docetaxel , Dornase Alfa , Doxorubicin , Efalizumab , Efavirenz , Emtricitabine , Enalapril , Epinastine Ophthalmic , Epirubicin , Epoetin Alfa , Eprosartan , Erlotinib , Erythromycin and Sulfisoxazole , Etanercept , Ethacrynic Acid , Ethosuximide Oral , Etodolac , Etoposide Oral and , Ezetimibe , Fentanyl Skin Patches , Flavoxate , Floxuridine , Flunisolide Nasal Inhalation , Fluorouracil , Fluphenazine , Fluticasone and Salmeterol Oral Inhalation , Formoterol , Fosamprenavir , Foscarnet Sodium , Fosinopril , Fulvestrant , Furosemide , Gabapentin , Ganciclovir , Gatifloxacin , Gemcitabine Hydrochloride , Glatiramer , Glipizide , Glyburide , Grifulvin V, Griseofulvin , Hydrochlorothiazide , Ibandronate , Ifosfamide , Imatinib , Imipenem and Cilastatin Sodium , Infliximab , Insulin Human (rDNA Origin) Inhalation , Interferon beta-1a Intramuscular , Ipratropium and Albuterol Inhalation , Irbesartan , Ketotifen Ophthalmic , Lamotrigine, Levetiracetam , Levocetirizine, Lisinopril , Lomustine , Loratadine , Losartan , Mechlorethamine , Mefenamic acid, Megestrol, Melphalan , Meprobamate , Meropenem, Mercaptopurine, Mesalamine , Methimazole , Methotrexate , Methsuximide Oral , Methyclothiazide , Metolazone , Metoprolol, Minocycline, Mitomycin , Modafinil , Moexipril , Moxifloxacin ophthalmic , Nafcillin Sodium , Natalizumab , Nedocromil oral inhalation , Nisoldipine , Olopatadine ophthalmic , Omeprazole, Oxacillin Sodium , Oxaliplatin , Oxcarbazepine , Paclitaxel, Palivizumab , Pamidronate , Peginterferon alfa-2a , Penicillin G Potassium or Sodium , Penicillamine Pentamidine Isethionate, Pentostatin , Perindopril , Phenobarbital , Phenytoin oral , Pindolol , Pioglitazone , Piperacillin sodium , Plicamycin , Pramlintide , Prazosin and polythiazide , Primaquine , Primidone , Procarbazine , Promethazine , Propafenone , Propranolol Oral , Propylthiouracil , Quetiapine , Quinapril , Rabeprazole, Ramipril , Ranitidine bismuth citrate , Rifabutin , Risedronate , Risperidone , Rifaximin, Rituximab , Ropinirole , Rosiglitazone , Rosuvastatin , Salmeterol oral inhalation , Sargramostim, Scopolamine, Secobarbital , Sibutramine , Silver sulfadiazine , Sitagliptin , Sodium dichloroisocyanurate, Sodium oxybate , Spironolactone , Streptozocin , Sulfadiazine , Sulfasalazine , Sulfinpyrazone , Sulfisoxazole , Tamsulosin , Telmisartan , Teniposide , Terbinafine , Teriparatide (rDNA origin) , Thioguanine , Thiotepa , Ticarcillin Disodium , Ticlopidine , Tiotropium Oral Inhalation , Tizanidine, Tocainide , Tolazamide , Tolbutamide , Topotecan Hydrochloride , Trandolapril , Trastuzumab , Trazodone, Triamcinolone Nasal Inhalation , Trimethadione , Trimipramine , Valproic Acid , Verapamil and Trandolapril , Vinblastine , Vinorelbine Tartrate , Von Willebrand factor, Zalcitabine , Zolmitriptan Nasal , Zonisamide , Conjugated estrogens


Ear Nose Throat

Acute viral nasopharyngitis (common cold), Allergic pharynigits, Angina tonsillaris, Epiglottitis, Fungal pharyngitis, Laryngeal cancer, Laryngitis, Oropharyngeal lesion, Peritonsillar abscess, Post-nasal drip, Sinusitis, Thyroiditis, Tonsillitis, Tonsillolith, Tracheobronchitis, Retropharyngeal abscess,


Endocrine No underlying causes
Environmental Smoke
Gastroenterologic GERD
Genetic No underlying causes
Hematologic Neutropenia,

Leukemia,

Iatrogenic Endoscopy,

Invisalign, Nasogastric intubation, Radiation, Uvulopalatopharyngoplasty,

Infectious Disease

Anthrax, Adenovirus, Arcanobacterium, Candida Albicans, Chlamydia pneumoniae, Coronavirus, Coxsackie A virus, Coxsackie B , Cryptococcus, Cytomegalovirus, Diphtheria, Duke's disease, Ebola, Enterovirus, Epstein-Barr Virus, Fusobacterium, Gonococcal Infections, Group A streptococcal infection, Hantavirus pulmonary syndrome, Herpangina, Herpesviridae, Histoplasma, Human parainfluenza viruses, Infectious mononucleosis, Influenza, Lassa Fever, Lemierre's syndrome, Moraxella catarrhalis, Mumps, Parainfluenza, Pneumococcus, Poliovirus, Q Fever, Rabies, Rhinovirus, Scarlet fever, Severe acute respiratory syndrome, Staphylococcus aureus Strep throat, Syphillis, Tularemia, Mycobacterium, Mycoplasma,

Musculoskeletal / Ortho No underlying causes
Neurologic Encephalitis lethargica,
Nutritional / Metabolic Ariboflavinosis,
Obstetric/Gynecologic No underlying causes
Oncologic Laryngeal cancer,

Lymphoma

Ophthalmologic No underlying causes
Overdose / Toxicity

Cocaine, Hydrogen sulfide, Methotrexate (patient information), Peginterferon alfa-2a (patient information),

Psychiatric No underlying causes
Pulmonary No underlying causes
Renal / Electrolyte No underlying causes
Rheum / Immune / Allergy Hay fever,

Kikuchi-Fujimoto disease, Kawasaki disease, Lymphadenitis,

Sexual No underlying causes
Trauma Trauma to the throat
Urologic No underlying causes
Miscellaneous Chronic Fatigue Syndrome,

Foreign body Chemical burns

Causes in Alphabetical Order


References

  1. Del Mar C (1992). "Managing sore throat: a literature review. I. Making the diagnosis". Med. J. Aust. 156 (8): 572–5. PMID 1565052.
  2. 2.0 2.1 Del Mar CB, Glasziou PP, Spinks AB. (2004). "Antibiotics for sore throat". TheCochrane Database of Systematic Reviews (Issue 2): Art. No.: CD000023.pub2. doi:10.1002/14651858.CD000023.pub2. - Meta-analysis of published research
  3. "Antibiotics for sore throat to prevent rheumatic fever: Yes or No? How the Cochrane Library can help". CMAJ. 171 (7). 2004. doi:10.1503/cmaj.1041275. Unknown parameter |month= ignored (help) - Canadian Medical Association Journal commentary on Cochrane analysis
  4. "Treatment of sore throat in light of the Cochrane verdict: is the jury still out?". MJA. 177 (9): 512–515. 2002. - Medical Journal of Australia commentary on Cochrane analysis
  5. Zoch-Zwierz W, Wasilewska A, Biernacka A, Tomaszewska B, Winiecka W, Wierciński R, Porowski T (2001). "[The course of post-streptococcal glomerulonephritis depending on methods of treatment for the preceding respiratory tract infection]". Wiad Lek. 54 (1–2): 56–63. PMID 11344703.

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