Pharyngitis Flashcards
____________
Sore throat: common chief complaint
Majority are non-bacterial/viral: part of the influenza
and common cold syndrome
Uncommon in children < 1 yr
Peak: 4-7 yrs
May continue throughout childhood and into adult life
Pharyngitis
What is the peak age of pharyngitis?
4-7 yo
Response to antibiotics
Complications of streptococcal infection (Number 1
most dreaded etiology)
_______________
Acute streptococcal pharyngitis: warrants accurate
diagnosis and therapy to prevent suppurative and nonsuppurative
complications.
The life threatening infectious complications of
oropharyngeal infections warrant some discussion.
Rheumatic fever
glomerolonephritis
Tonsillitis/Epiglottitis
Uvulitis
Peritonsillar abscess __________-
Retropharyngeal abscess ____________
Ludwig angina___________-
Vincent angina__________________
(Quinsy)
(prevertebral)
(submandibular)
(mixed anaerobic bacteria)
What are the etiology of pharyngitis?
Infection
Bacterial/Viral/Fungal
Tonsillitis/Epiglottitis
Uvulitis
Peritonsillar abscess (Quinsy)
Retropharyngeal abscess (prevertebral)
Ludwig angina (submandibular)
Vincent angina (mixed anaerobic bacteria)
2. Irritation
Cigarette smoke/smog
Inhaled irritants
Reflux esophagitis
Chemical toxins
Dry hot air
Hot foods, liquids
3. Others
Tumors
Granulomatosis
Foreign body
What are the viral etiologies?
Viral Etiology
Parainfluenza (types1-4)
Influenza
Rhinovirus
Coronavirus
RSV
Adenovirus
Herpes simplex 1&2
Epstein-Barr virus
Adenovirus (types 2,4,7,14,21,others)
Coxsackie A & B
CMV
HIV
Human Herpesvirus6
Measles
Varicella
Rubella
What are the bacterial etiology?
Bacterial Etiology
S. pyogenes (lives in throat, ↑ if stressed)
Grp A-β hemolytic strep (GABHS)
Grp C & G - β hemolytic strep
Mixed aerobic/anaerobic organisms
Neisseria gonorrheae
Corynebacterium diphtheriae
Yersinia enterocolitis
Chlamydia pneumonia atypical pneumonia &
Mycoplasma pneumonia pharyngitis
Arcanobacterium hemolyticum
Francisella tularensis
___________________ (lives in throat, ↑ if stressed)
S. pyogenes
Inflammatory mediators generated by viruses
Bradykinin & Lysylbradykinin
Stimulate pain nerve endings
Direct invasion and colonization of the pharyngeal
mucosa
Elaboration of virulence factors: exotoxins, hemolysins,
streptokinase, deoxyribonucleases, proteinases,
hyaluronidase – confer resistance to phagocytosis and
destruction.
Pharygitis pathophysio
What are the pathological changes in viral infection?
Viral pharyngitis
Edema, hyperemia ( increase blood flow) of tonsils and pharyngeal mucous
membrane
Nasopharyngeal hyperplasia
Vesiculation and mucosal ulceration
Herpes simplex & Coxsackie A
Inflammatory exudate
Adenovirus & Epstein-Barr virus
__________
Intense inflammatory response : marked erythema (**redness of the skin)
Edema of fauces and uvula
Grayish yellow tonsillar exudate
Streptococcal
__________ –drumstick appearance
Fibrous pseudomembrane with necrotic epithelium,
leucocytes, bacterial colonies
Dislodgement of pseudomembrane provokes bleeding and
aspiration
Bull Neck ➡ due to swelling
Diphtheria
This is a clinical feature of : ______________
Mild to moderate pharyngeal discomfort
Soreness, scratchiness, irritation
Rhinorrhea and post nasal discharge
Low to moderate temperature elevation (38.5C)
Pharynx may appear normal or with mild edema and
erythema
NO pharyngeal/tonsillar exudates
Complaints subside over 3-4 days
Pharyngitis with the common cold
This is a clinical feature of: ___________
Sorethroat: major complaint
Myalgia, headache, cough
Coryzal (acute inflammation of the mucousmembrane of the nasal cavities; cold in the head.) symptoms and cough
Fever - uncommon, if present:early defervescence ( abatement of fever)
Edema/erythema of pharynx – mild
NO exudates, NO painful cervical adenopathy
Pharyngitis with Influenza
Pharyngoconjunctival Fever : _________________
Marked sore throat with cough, malaise, myalgia,
headache, chills, dizziness
High grade fever : 5-6 day duration
Conjunctivitis: follicular type, bilateral
Pharyngeal erythema, some exudates
Cervical adenitis
Adenoviruses
____________
-marked sore throat, erythematous pharynx, fever, rash
- red peritonsilar area
- Posterior pharynx ➡ Petechiae
** hand foot mouth disease— vesicles not seen in the mucosa
Pharyngitis due to Coxsackie Viruses
What are the two syndromes of pharingitis of coxsackie?
2 syndromes:
1 Herpangina
2 HandFootMouth disease(
1_______________: discrete(1-2mm across) painful graywhite
papulovesicular lesionson thesoft palate,uvula,
ant. tonsillar pillars x 7 days; lesions rupture - ulcerate
** Herpangina**
____________): painful
vesicles in the oropharynx, ulcerative vesicles in the palms
and soles,trunk; not toxic looking; < 7days
2 HandFootMouth disease(CoxsackieA16
_______________
_______________– oral infections common during childhood and
adolescence
high fever, gingivostomatitis which become ulcers -
anterior portion of mouth and lips, tongue, palate,
tonsils, pharynx; tender lymphadenopathy; Drooling,
refusal to eat/drink
Resolves in 7-14 days, even if untreated
Pharyngitis and the Herpes simplex virus
HSV1