Orofacial Infection Flashcards
T/F Candida can be isolated from
Healthy mouths?
T
What is the most common type of fungal oral mucosal infective agent?
Candida albicans
What are local factors which predispose to oral candidiasis?
Denture wearing at night
Dry mouth
Steroid therapy esp inhaled
High carb diet
How can candida be categorised?
Acute
Chronic
What systemic factors predispose to or candidiasis?
Immunocompromised T cell defects (HIV, diabetes,leukaemia) Age extreme AB therapy Diabetes mellitus Anaemia
What are examples of acute candida ?
Acute pseudo membranous candidiasis
Acute erythmatous/strophic candidiasis
Name examples of chronic candidal infection?
Chronic hyperplastic candidiasis (leukoplakia )
Chronic erythmatous candidiasis (denture stomatitis)
Candida associated lesion:
Angular chelitis
Median rhomboid glossitis
Mucocutaneous candidiasis
How does oral thrush present?
White patches on the oral mucosa which are easily removed by rubbing off may leave mucosal erythema
A disease if a disease
Seen in neonates which haven’t yet developed immunity
What microbiological tests can be performed with people that babe candidiasis?
Swab: culture and sensitivity testing
Phosphate buffered mouthwash: not site specific
What tests can be done for thrush?
Correct any local or systemic cause
Check FBC/B12/folate/blood glucose and HIV tests
Microbiological
How do you threat thrush?
Topical: MAN
Systemic: for Immunocompromised or where wide spread lesions
What is another name for chronic hyperplastic candida?
Candidal leukoplakia
How does candidal leukoplakia
Present?
Non remove able white lesion on commissaries of buccal mucosa
Frequently
Bilateral
Typically seen in smokers
How do you diagnosis CHC?
Clinicslly BUT need histopathology confirmed
How do you manage CHC?
Manage risk factors
Topical AF
Systmic AF
Follow up long term since malignancy risk of 9-40
How does acute erythematous candida present?
Erythmatous area
What are the risk factors for acute erythmatous candida?
Steroid inhalers and AB
What is another name for denture stomatitis?
Chronic erythmatous candida
How do you treat acute erythmatous candid?
Topical AF
rinse mouth after steroid inhaler
How does chronic erythmatous candida present?
Usually on palate with upper surface of denture it is often a symptomatic
How do you treat chronic erythmatous candida?
Topical AF therapy and denture hygiene
What is an example of a candida associated lesions?
Median rhomboid glossitis
Angular chelitis
How does median rhomboid glossitis present?
Lobulated lesion at junction between post and anterior tongue
It is usually asymptomatic
And dx is clinical
Topical AF therapy needed
What is a less common bacterial infectjon of the mouth?
Alveolar abscess/cellulitis
name some bacterial infections of the mouth?
ANUG Osteomyelitis Periaplical abscess Periodontal abscess Periocoronitis Infected cyst
What is the difference between alveolar abscess and cellulitis ?
Abscess is collection of pus
Cellulitis diffuse pus
Which spaces can infection spread in head and neck?
SM space SL space Submental space Mental space Buccal space Canine/infraorbital space Submasseteric space Pterygomandibular space Deep temporal space Superficial temporal space
Where does infection from upper centrals drain?
Labial
Nasal cavity if long roots
Where does infection from upper 2’s spread?
Palate
Where does infection from
Upper canines spread?
Labial sulcus or infraorbital
Where does infection from maximal let posterior teeth drain?
Buccal sulcus due to thin buccal place and high attachment of buccinator
Where do lower incisors point?
Since mentalis attaches above apices, it usually drains at chin point or submental space
Where do mandibular molars drain to?
If apices are above Mylohyoid then sublingual
If below Mylohyoid then submandibular
Where do periodontal abscesses drain to?
Via gingival sulcus or laterally
Which bacteria are commonly imbued in periodontal abscesses?
Gram neg anaerobes eg PG/ fusobacteria
spirochete sand actinomyces
What agents are involved in ANUG?
Poly microbial
Anaerobes
Boriella vincentii
Fusobacteria nucleatum
What predisposes you to ANUG?
Poor OH Smoking Immunocompromised Stress Vit C def Viral resp infections
What key features relate to ANUG?
Halitosis
Loss of interdental papilla
Slough
Pyrexia?
How do you treat ANUG?
Metronidazole 400mg tds
What are the potential risks of untreated dental infections?
Osteomyelitis Cellulitis Fistula formation Septacaemia Spread into tissue spaces Meningitis
Which organisms are associated with CST?
Staph aureus
What is cavernous sinus thrombosis?
Formation of blood clot in Cavernous sinus
What can predispose to CST?
Nasal infection 50% Sinus infection (30%) Dental infection (10%)
What is osteomyelitis ? And how can it be classified?
Inflammation of the bone marrow
Suppurative
-acute suppurative osteo
-chronic suppurative osteo
non suppurative
- diffuse sclerosimg
- focal sclerosimg
- proliferative periostitis
- ORN
What are the symptoms of CST?
Palpebral oedema Cyanosis Exophthalmos Proptosis Dilated pupil Limited eye movement Rigors Pyreixa
What are the sources of osteomyelitis?
Periaplical or peridontal infection
Fractures
Penetrating injuries
What are the predisposing factors for osteomyelitis?
Osteoradionecrosis
Osteopetrosis
What are the signs and symptoms of osteomyelitis ?
Deep seated throbbing pain Sweeping Halitosis Anorexia Parasthesia Malaise Fever Cervical lymphadenopathy Tooth mobility Pus Leukocytosis
What causes syphylis?
STI
Treponema palladium
What are the sequelae following infection with T Pallidium?
Primary syphylis: primary chancre at site of inoculation following oral sex, causes painless ulcer and lymphadenopathy
Secondary : snail track ulcers 2-6 weeks later
Terriary: leukoplakia and gumma on palate
What causes TB?
Mycobacterium Tuberculosis
How do you treat syphylis?
Benzathine pencillin for 1 month
Oral lesions are rare in TB? T/F
T
How may TB present in Head and neck?
Ulcer on dorsal of tongue
Salivary gland swelling
Lymphadenopathy
How do you treat TB?
Rifampicin
Isomiazid
Ethambutol
Spiramycin
How do oral lesions in TB develop in mouth?
Tubercle bacilli in sputum coughed into mouth
What is erysipelas?
Acute streptococcal infection which spreads via lymphatic system
Usually caused by strep pyogenes which produced exotoxin and then rash
What is actinomycosis?
Chronic supportive infection which is rare. Swelling at angle of the mouth
Multiple sinus formation and trimsus and caused by gram pos organisms, a israelli and aa
Tropical country
What signs indicate acinomycosis?
Extra oral sinus with no oral cause
May occur following jaw surgery or neck
What are the demographics associated with actinomycosis?
30-60 male
When does a israelli become pathogenic?
When tissue is non vital and reduced oxygen
How do you treat actinomycosis?
Pencillin
Drainage
What are the 5 of infective periodontal diseases?
Linear gingival erythema NUG NUP ANUG Cancrum oris
What is the agent involved in Linear Gingival Erthema?
Fungus
Which bacteria are involved in acute ulcerative gingivitis?
Spirochete and fusiform
They invade muscle
What happens to the tissue in AUG?
Gross oedema which spreads outwards destroying soft tissues and bone
Why do the tissues slough away in AUG?
Because gangrenous infection occurs leading to loss of teeth and necrotic sequestra
In what demographics is AUG mainly seen in?
Children under 10 Immunocompromised Protein deficiency Anaemia Poor OH Systemic infection eg measles
What can AUG lead to?
Cancrum oris
Which fusiform bacteria are involved in Cancrum oris?
Porphyromonas
Fusiform necrophorum
Boriella vincentii
How can viral infections be diagnosed?
In the lab
Clinically
What features are considered when diagnosing viral infection clinically?
History of contact
Incubation period
Clinical features
What effect can viruses have on the tissues?
Cell death and Persistant infection
What is an example of a latent viral infection?
Herpes simplex
What is an example of a chronic viral infection?
Hep B
What is an example of a slow viral infection?
HIV
What is an example of an acute viral infection?
Measles
How can you use lab methods to detect viruses?
Antibody response Viral particles( Culture, smear, PCR, EM)
what type of viruses are herpes viruses?
large
icosahedral
dsDNA
Which herpes viruses exist?
HSV1/HSV2= HHV1 and 2 HHV3=VZV HHV4=EBV (GF) HHV5=CMV (GF) (HHV6= GF HHV7) HHV8 = kaposi sarcoma
What disease is associated with HSV1/HSV2 primary infection?
HSV1: herpes labialis and oral ulceration
Primary infection as a child is usually sub clinical but when is clinical leads to Primary herpetic gingivostomatitis only affects around 5% of people,
HSv2: oral ulceration
What disease is associated with latent HSV1 infection?
Latent virus in periods of stress fever UV and immuno suppression there is either:
- asymp shedding of virus
- Herpes labilis
- RIOHU
how do you diagnose HSV1 infection?
mainly clinical but can do viral and serolgy testing
how is HSV transmitted between persons?
saliva
Direct contact with infected lesions
What disease is associated with latent infection of HSV2?
cold sores
how are HSV2 infections transmitted?
infected saliva, semen and bodily fluids
more sever infections with HSV2 than HSV1
what diseases can HSV1 and HSV2 cause?
primary herpetic gingivostomatis
herpetic whitlow
herpes labialis
recuurent herpes
What disease is caused upon contraction of VZV?
Chicken pox Herpes zoster (Shingles)
What are the sequale following VZV infection? How can it be diagnosed?
macular, papular rash
latent infection as virus remains dormant in the posterior root ganglion and nerve cells bodies
in those that become immunocomprimsed and elderly there is recrudescence.
this leads to shingles infection (follows dermatome) doesnt cross the midline introrwl and extra oral distribution
Diagnosis: clinical and history but can do lab tests to confirm.
- Serology: specific VZV IgM AB only occurs during chickenpox or active herpes zoster
- Four fold rise in VZV specific IgG which can be demonstrated over a 2 week period in a true phase so retrospective only
- Swab taken and in special transport media for PCR
Where is the DNA held in EBV?
nucelocapsid
What is the incubation period of EBV?
20-40 days
What can EBV cause? How is EBV transmitted?
GF/IM/hairy leukoplakia, burkitts lymphoma
saliva
What disease is caused by Coxsackie A virus?
Hand foot and Mouth
Herpangina
How does Herpangina present?
Fever, sore throat, vesicles, vominitkng and a do pain,
ulcers on the soft palate, and post aspect of pharynx
Fever subsides within 2-4 days
cervical lymph
Takes one week to resolve
how does HFM presnt?
mild malaise, oral ulceration and
rash on hands and feet more commonly seen in children than adults
5-10 vesicles that rupture and show shallow ulceration
caused by coxscakie A
Management: spontaneous resolution
What type of DNA are paramyxoviruses?
RNA!!
Large pleiomophic enveloped
what do paramyxoviruses cause?
Measles and Mumps
How do measles presnt?
koplik spots
macular papular rash
fever and malaise
What is the incubation period for paramyxoviruses when causing measles?
7-14 days
How do mumps present?
mainly affects parotid glands causing sialadentitis
adults can get orchitis, balanitits and meningioencephalitis
what should adults suffering from mumps take? and why?
steroids to prevent infertitly
how long is the paramyxoviruses incubation period in mumps?
2-3 days
T/F people develop immunity o further attacks of acute viral sialadentits?
TRUE
what is the structure of papilloma virus?
small icosahedrral DNA
What do papilloma virus cause?
Soft tissue neoplasms, wart like any location in the oral cavity
How do papillomas present?
pedunculated or sessile may also be on digits of patients with oral infecting
Which other viruses are associated with papilloma virus?
HPV 13 + 33 HECKS and FEH
HPV 6 and 16: cancer
what is the structure of poxvirus?
Large DNA, brick shaped and enveloped
what causes molluscum contagiosum and what is its clinical appearance?
poxvirus
umbilicated papules on the face and body
which people are commonly affected with molluscum contagiosum?
children and HIV
common STI
what are the symptoms of herpetic whitlow?
Lymphadenopathy
swollen finger
which species of candida are seen more commonly in immunocompromised patients?
glabrata
kruisei
trpoicalis
which serotype of candida is more commonly seen in immunocompromised pts?
B
which serotype of candida is more commonly seen in healthy individuals?
A=B
What are the four host defenses against candida?
oral epithelium
microbial interactions
salivary non immune(mechanical washing) and immune (IgA)
when would you prvide prophylaaxis for people against candidiasis?
chemotherapy,immunosuppressant therapy,prlonfed ab, history of candida followinf short course of ab
NOT HIV
white colour lesions are present in candidiasis?
red and white
which form of candida does white lesions predominate in?
hyphal
which form of candida does red lesions predominate in?
yeast
where is primary candida confined to?
oral and peri-oral tissues
where is secondary candida confined to?
other parts of the body
what is a complication arising from acute erythmatous candidasis?
lesions for more than month can lead to chronic multifocal candida
what other organism other than candida is implicated in angular chelitis?
staph aureus
which factors predispose to angular chelitis?
decreased vertical dimension
denture wearer
deficiency state
enlarged lips (OFG, Crohns, Downs)
how does angular chelitis present?
fissurung at angle of mouth
triangular in shape
lesions may extend beyond the vermillion border in linear furrows and rhagades
chin may also be affected
how do you manage angular chelitis?
MAN and consider fusidic acid if staph aureus possible cause
what is the definition of chronic hyperplastic candidasis?
persistant white plaques which cannot be wiped off
what is chronic mucocutanous candidais ? and how do you treat it?
candida that affects the nails mouth and skin.
treat using systemic AF
what is chronic mucocutanoues candidasis associated with?
immune defect and endocrine diseases (autoimmune hypoparathyoidism and hypoadrenocortiscm) or thymus disease
what can CMV cause?
HHV5 and associated with oral ulceration and retitnits
How do you manage herpes zoster infection?
antivirals: 10 days aciclovir 800mg 5 times/day
where does EBV replicate?
replicates in the mucosal cells and salivary glands then spreads to B cells and blood stream
how do you manage OHL?
valaciclovir therapy
what are the viral causes of lymph node enlargment?
URTI paramyxic virus (measles) herpex simplex zoster HFM herpangina GF HIV
what are the causes of bacterial lymph node enlargement?
syphilis
Local head and neck infections
Cat scratch
What are the protozoal causes of infection?
toxoplasmosis
in children less than 10 what are the causes of cervical lymph node enlargemet?
Viral infection (URTI)
kawasaki disease
HSV
in an adolescent less than 20 years old, what are the causes of cervical lymph?
viral URTI bacterial infection GF HIV Toxoplasmosis
what is kawasaki disease?
AI vascilitis which occurs when there is an underlying systemic infection Fever for more than 5 days plus 4 of: Cervical lymphadenopathy (>1.5cm) Non supparative conjuctivitits Oral MM changes eg strawverry tongue Periperheral odema, erthythema, desquamm Polymorphous rash on trunk
A bcaterial infection of the mandible can lead to what?
ludwigs angina
polymicrobial infection of the sublingual and aubmanidbular neck spaces
what is GF syndrome caused by?
EBV (HHV4)
CMV (HHV5)
acute HIV
Toxoplasmosis
What are the symptoms of GF?
Fever, malaise and weightloss Cervival lymphadenopathy Exudative tonsillitis petechial rash on palate splenomegaly
What happens when amoxicillin is adminstred to people with GF?
Rash if EBV is cauastive agent
how do you diagnose GF syndrome?
Atypical lymphocytosis Paul-bunnel test Monospot test Viral serological tests raised liver enzyme
what causes toxoplasmosis?
Toxoplasma gondii
what are the sources of t.gondii?
cats and soil, incompletely cooked meat
what are the symptoms of Toxoplasmosis?
Fever, malaise, cervical lymphadenopathy
what is the histology behind toxoplasmosis?
follicular hyperplasia of lymph nodes
how do you treat toxoplasmosis?
self lumiting or long course tetracycline
what are the complications of toxoplasmosis?
congenital defects since can cross the placenta
immunocomprised pateints can cause multifocal necrotising encephalitis
what is the causative agent in cat scratch?
bartonella henselae
what is the source of bartonella henselae?
cats/thorns/animals
what are the symptoms of cat scratch?
papules which arise 3-4 days post infection
fever and malaise
lymph uniltaeral
LN suppuration
what is the histology behind cat scratch?
Necrotising granulamatous inflam
what is the treatment for cat scratch?
self limiting/long dose tetracycline
what are the causes of lymph node enlargement in a patient of less then 40?
malignancy HIV Bacterial syphilis GF/IM
what are the causes of lymph node enlargement in a patient less more the 40?
HIV and malignancy
what are the neoplasms of the lymph nodes?
Primary: Lymphoma and Leukaemia
Secondary: Metastatic
which drugs can cause cervical lymph?
phenytoin, carbamezapine
which connective tissue disorders can cause lymph node enlargement?
SLE
what is sarcoidosis?
mutlisystem granulomatous disease
what is the incidence of sarcdoidosis?
young adults mainly
F:M 2:1
what are the symptoms of sarcoidosis?
Pulmonary lesions, fever, malaise, weight loss, bilateral hilar lymph, cervical lymph, cough, dysponea, oral lesions
what oral lesions occur in sarcoidosis?
lip swelling skin lesions cobble-stoning mucosa ulcers and swellings hyperplastic gingivitis salivary swellings/dry eyes/dry mouth heerfodt syndrome
what s heerfordt syndrome?
Pyrexia
parotitis
uveitis
facial nerve palsy
what are the microscopial features of sarcoidosis?
HELLN heals with scars Epitheloid cels Langerhans giant cells Lymphocytes Noncaseatig epitheloid granulomas
how do you investigate sarcodiosis?
chest x ray liver US SACE enzyme is raised ESR/Serum calcium Transbronchial lung biopsy Minor salivary gland biopsy Kveim test
how do you treat sarcoidosis?
systemic steroids
what is a branchial cyst?
developmental remnant of any of the paired pharyngeal/branchial pouches in the side of the throat of an early embryo
what type of cyst is a branchial cyst?
lymphoepithelial cyst
how do you treat branchial cysts?
surgical removal otherwise branchial fistula may develop
what skin cysts can cause neck lumps?
dermoid cyst: epidermis and skin appedndages
epidermoid cysts: epidemis only
what is the incidence of dermoid cysts?
15-35, M=F
how do dermoid cysts present?
doughy/fluctutant swelling in the FOM or midline of neck, can dssplace the tongue affecting speech, eting and breathing
how do you treat dermoid cysts?
surgical removal
how do you test for syphylis?
VRDL test
What causes verruca vulgaris?
Human papilloma 2 and 4
How do verruca vulgaris appear?
Skin warts involving the oral mucosa
White sessile and pedunculated
Solitary or multiple
Most commonly on lips, hard palate and gingival
What are the causes of cervical lumps?
Lymph: Infective, Neoplastic, sarcoidoisis, drugs, CTD
glands: Salivary gland, thyroid gland
other: branchial cyst, skin cyst, soft tissue neoplasm