Parotitis: Causes, Symptoms, Diagnosis & Treatment | Ayurveda | Ayana Ayurveda

SURGICAL ANATOMY

Largest of the major salivary glands
Predominantly serous gland.
Occupies parotid bed
Relations:
- Superiorly → external acoustic meatus and temporomandibular joint
- Inferiorly → angle of mandible and upper sternocleidomastoid region
- Anteriorly → masseter and mandibular ramus
- Posteriorly → mastoid process and sternocleidomastoid
- Medially → styloid apparatus, parapharyngeal structures and carotid space
Enclosed by the parotid fascia, derived from the investing layer of deep cervical fascia.

Note: The parotid capsule is relatively firm. Therefore, acute inflammatory swelling can produce significant pain because the inflamed gland expands within a relatively confined fascial envelope.

LOBES

The facial nerve traverses the parotid & surgically divides into

Superficial lobe
Deep lobe

IMPORTANT STRUCTURES

Facial nerve
External carotid artery
Retromandibular vein - Superficial temporal vein & Maxillary vein merge
Intraparotid lymph nodes
Auriculotemporal nerve branches

PAROTID DUCT - STENSEN DUCT

Parotid gland → crosses masseter → turns medially → pierces buccinator → opens into oral cavity opposite the upper second molar.

Examination: Massage the gland posterior to anterior. Observe the duct opening. Normal secretion is clear. Purulent discharge suggests bacterial sialadenitis.

BLOOD SUPPLY

External carotid artery
- Superficial temporal artery
- Maxillary artery
- Transverse facial artery
Retromandibular vein

NERVE SUPPLY

Parasympathetic: secretomotor

- Preganglionic fibres: CN IX → lesser petrosal nerve → otic ganglion
- Postganglionic fibres travel with the auriculotemporal nerve → parotid gland

Sensory

- Auriculotemporal nerve
- Great auricular nerve

Facial nerve: passes through the gland but does not provide its secretomotor supply.

LYMPHATIC DRAINAGE

Intraparotid lymph nodes drain:

Scalp
External ear
Periauricular region
Eyelids
Adjacent facial structures

Note:

Reactive intraparotid lymphadenopathy is common.
Metastatic cutaneous malignancies may involve the parotid.
Lymphoma can arise within the parotid.
Intraparotid nodes must be distinguished from primary parotid lesions.

ETIOPATHOGENESIS

A. Infectious

Bacterial

Staphylococcus aureus
Streptococci
Oral anaerobes
Gram-negative organisms, particularly in hospitalised/immunocompromised patients

Viral

Mumps
Influenza
Parainfluenza
Coxsackievirus
EBV
CMV
HIV

B. Obstructive

Sialolithiasis
Ductal stricture
Mucus plug
Ductal foreign body
External compression

C. Autoimmune/inflammatory

Sjögren disease
IgG4-related disease
Sarcoidosis
Granulomatosis with polyangiitis
Other systemic inflammatory disorders

D. Metabolic

Diabetes
Malnutrition
Liver disease
Alcohol-associated disease
Eating disorders

E. Iatrogenic

Anticholinergic drugs
Radiation
Radioiodine
Certain medications causing xerostomia
Postoperative dehydration

F. Mechanical

Pneumoparotitis
Positive-pressure ventilation
Wind-instrument playing

G. Neoplastic/pseudoneoplastic

Pleomorphic adenoma
Warthin tumour
Mucoepidermoid carcinoma
Adenoid cystic carcinoma
Lymphoma
Metastatic disease

Reduced salivary flow may occur with:

Dehydration
Fever
Fasting
Postoperative state
Anticholinergic drugs
Poor oral intake
Malnutrition
Severe systemic illness

OBSTRUCTION → SALIVARY STASIS → INFLAMMATION → INFECTION

Chronic obstructive parotitis becomes a self-perpetuating cycle. Hence repeated antibiotics fail in mechanical obstructive disease.

CLINICAL CLASSIFICATION

Acute or chronic?

Unilateral or bilateral?

Painful or painless?

Pattern	Important possibilities
Acute + painful + unilateral	Bacterial parotitis, obstruction with secondary infection
Acute + painful + bilateral	Viral parotitis, systemic disease
Recurrent + meal-related pain	Sialolithiasis/ductal obstruction
Chronic + bilateral	Sjögren, HIV, sarcoidosis, metabolic causes
Chronic + painless + discrete mass	Benign tumour
Painless + firm + persistent	Neoplasm/autoimmune disease
Swelling + facial palsy	Malignancy until proven otherwise

CLINICAL FEATURES

ACUTE BACTERIAL PAROTITIS-

associated with dehydration, poor oral hygiene, debility and salivary stasis.

Sudden painful swelling
Usually unilateral
Tender gland
Fever
Malaise
Erythema
Warmth
Pain on chewing
Trismus in more severe disease
Reduced salivary flow
Purulent discharge from Stensen duct

VIRAL PAROTITIS - MUMPS

Fever
Headache
Malaise
Myalgia
Anorexia
followed by painful swelling of one or both parotids - peaks within 1–3 days & resolves in a week. Unilateral in 25% patients.
Chipmunk Cheek / Puffy cheek appearance: angle of the mandible becomes obscured and the ear may be displaced upward and outward.

Mumps can occur even in vaccinated individuals, vaccination may reduce risk and severity.

OBSTRUCTIVE PAROTITIS - Meal-time syndrome

Food stimulus → increased salivary secretion → obstruction → painful glandular enlargement.

Pain immediately before/during meals
Recurrent swelling
Gradual resolution after eating
Recurrent episodes over months/years

A palpable stone may occasionally be identified - Sialolithiasis

CHRONIC PAROTITIS

Features include:

Recurrent swelling
Recurrent pain
Reduced salivary secretion
Thick/abnormal saliva
Xerostomia
Repeated infective episodes
Progressive glandular fibrosis

Sialography: Fruit-laden tree / branchless fruit-laden tree appearance

SJÖGREN-ASSOCIATED PAROTITIS

Bilateral parotid enlargement persistently
Xerostomia
Dry eyes
Recurrent gland swelling
Dental caries
Difficulty swallowing dry foods
Increased risk of B-cell lymphoma

EXAMINATION

Inspection

Unilateral/bilateral swelling
Skin erythema
Ear displacement
Facial asymmetry
Discrete mass
Scars
Fistula

Palpation

Temperature
Tenderness
Consistency
Fluctuation
Mobility
Discrete versus diffuse enlargement

Duct examination

Massage the gland and observe duct opening.

Clear saliva
Thick saliva
Purulent discharge
Blood
Absence of secretion

Cranial nerve examination

CN VII - Facial weakness + parotid mass - malignant involvement.
CN V
CN IX/X
CN XII
Cervical lymph nodes

INVESTIGATIONS

A. Blood investigations

CBC - Leukocytosis & Neutrophilia in bacterial disease.

CRP/ESR

Blood cultures

MICROBIOLOGICAL INVESTIGATION

Gram stain + culture + sensitivity
If recurrent/unusual
- Anaerobic culture
- Mycobacterial studies
- Fungal studies
If abscess: US-guided aspiration

ULTRASONOGRAPHY

Non-invasive
No radiation
Easily available
Can identify gland enlargement
Detects duct dilatation
Detects stones
Detects abscess
Identifies lymph nodes
Guides aspiration/FNAC
Differentiates diffuse inflammatory enlargement vs focal lesion.

CT - CONTRAST ENHANCED

Severe acute infection

Suspected abscess
Deep-space extension
Facial/deep neck involvement
Bony involvement
Calculi
Complications
Ductal dilatation
Fat stranding

MRI

Deep-lobe lesions
Tumours
Perineural spread
Soft-tissue extension
Complex inflammatory disease
Neoplasia
Vascular lesion

CONTRAST SIALOGRAPHY

Ductal stenosis
Sialectasis
Ductal obstruction
Chronic inflammatory changes

Note: Acute suppurative infection is a contraindication - ductal instrumentation exacerbates inflammatory process.

SIALENDOSCOPY

Diagnostic

Direct visualisation of duct
Identification of stones
Strictures
Mucus plugs
Inflammatory changes

Therapeutic

Stone removal
Duct dilation
Irrigation
Removal of debris
Intraductal medication

Major modern development in salivary gland surgery. This has shifted the treatment paradigm toward minimally invasive, gland-preserving management for selected obstructive/recurrent disease.

FNAC / CORE BIOPSY

Consider when there is:

Persistent focal mass
Suspicion of tumour
Lymphadenopathy
Persistent unilateral enlargement
Atypical chronic disease

FNAC is particularly useful for differentiating inflammatory enlargement from neoplastic disease, although the choice between FNAC and core biopsy depends on the clinical/imaging scenario.

AUTOIMMUNE INVESTIGATIONS

When Sjögren’s or systemic autoimmune disease is suspected:

ANA
Anti-Ro/SSA
Anti-La/SSB
Rheumatoid factor
Immunoglobulins

Additional investigations should be guided by the clinical phenotype.

INFECTIOUS WORKUP

Depending on epidemiology and clinical suspicion:

Mumps

Buccal swab RT-PCR
Viral testing
Serology in appropriate circumstances

CDC recommends laboratory testing when mumps is suspected; RT-PCR from buccal/oral specimens is an important diagnostic test.

HIV

Consider particularly with:

Bilateral chronic parotid enlargement
Cystic lesions
Xerostomia
Generalised lymphadenopathy
Recurrent unexplained parotitis

Tuberculosis

Consider in endemic settings with:

Chronic unilateral swelling
Cervical lymphadenopathy
Constitutional symptoms
Granulomatous pathology

DIFFERENTIAL DIAGNOSIS

Infective

Acute bacterial parotitis
Mumps
EBV
CMV
Influenza
HIV-associated salivary disease
TB
Other viral infections

Obstructive

Sialolithiasis
Ductal stricture
Mucus plug
Ductal foreign body

Autoimmune

Sjögren disease
IgG4-related disease
Sarcoidosis
Granulomatosis with polyangiitis

Metabolic

Sialadenosis
Diabetes
Alcohol-associated enlargement
Malnutrition
Liver disease
Eating disorders

Neoplastic- Benign

Pleomorphic adenoma
Warthin tumour
Oncocytoma
Other benign salivary tumours

Malignant

Mucoepidermoid carcinoma
Adenoid cystic carcinoma
Acinic cell carcinoma
Salivary duct carcinoma
Carcinoma ex pleomorphic adenoma
Lymphoma
Metastatic cutaneous malignancy

Feature	Bacterial	Viral/mumps	Obstructive	Autoimmune	Tumour
Onset	Acute	Acute	Recurrent	Chronic/recurrent	Gradual
Pain	Marked	Moderate	Meal-related	Variable	Usually absent
Fever	Common	Common	Usually absent unless infected	Usually absent	Usually absent
Laterality	Usually unilateral	Often bilateral	Usually unilateral	Often bilateral	Usually unilateral
Pus from duct	Often	No	Usually no	Usually no	No
Meal association	Variable	No	Strong	Variable	No
Discrete mass	Usually no	No	Sometimes	Usually no	Common
Facial palsy	Complication	Unusual	Unusual	Unusual	Major warning sign
Imaging	Inflammation/abscess	Diffuse enlargement	Stone/stricture	Diffuse heterogeneity	Focal lesion

MANAGEMENT

Identify & treat the cause: Infection/ Obstruction/ Autoimmune/ Neoplastic/ Metabolic

ACUTE BACTERIAL PAROTITIS

Massage
Antibiotics
Sialogogues - Stimulate salivary flow
Hydration
Analgesia
Warm compresses
Oral hygiene
Correction of predisposing factors

PAROTID ABSCESS

Clinical clues: Severe focal tenderness, Fluctuation, Persistent fever, Failure to improve with antibiotics, Progressive swelling, Trismus & Imaging showing collection

Antibiotics
Imaging
Culture
Ultrasound-guided aspiration
Drainage

OBSTRUCTIVE PAROTITIS

Initial Rx

Hydration
Gland massage
Sialogogues
Analgesia
Treatment of secondary infection

Definitive Rx

Small ductal stone → endoscopic removal where feasible.
Stricture → sialendoscopic dilatation.
Larger/complex stone → endoscopy-assisted or combined endoscopic–external approaches.

CHRONIC/RECURRENT PAROTITIS

Conservative

Hydration
Oral hygiene
Massage
Sialogogues
Analgesics

Interventional

Sialendoscopy
Ductal lavage
Stricture dilatation
Stone removal

Refractory(stubborn/irresponsive) disease- Parotidectomy

AUTOIMMUNE PAROTITIS

For Sjögren-associated disease:

Salivary stimulation
Hydration
Dental care
Management of xerostomia
Treatment of systemic autoimmune disease
Immunomodulatory therapy in selected patients

Persistent/ suspicious gland enlargement - ? lymphoma.

MUMPS PAROTITIS

No specific antiviral therapy if uncomplicated.

Rest
Hydration
Analgesia/antipyretics
Nutritional support
Isolation

SURGICAL MANAGEMENT:

The shift from gland excision toward minimally invasive gland preservation is an important development in modern salivary surgery.

Surgical Caution - Facial nerve injury/ Haemorrhage from RM vein & EC artery/ Fistula/ Scar/ Incomplete drainage - Hence imaging-guided intervention & knowledge of parotid surgical anatomy are important.

Abscess → aspiration and/or drainage depending on location, size and response.

Persistent obstruction → sialendoscopy / stone extraction / ductal intervention.

Recurrent chronic → gland-preserving procedures where possible; else parotidectomy.

Tumour → appropriate oncologic parotid surgery.

COMPLICATIONS

Local Complications

Abscess

Cellulitis - surrounding soft tissues.

Deep neck infection

Fistula

Facial nerve palsy

Osteomyelitis - rare

Sepsis

Systemic Complications (In Mumps)

Orchitis
Oophoritis
Mastitis
Pancreatitis
Meningitis
Encephalitis
Hearing loss

Post-surgical Complications

Facial nerve injury → temporary or permanent facial weakness.
Frey syndrome - Gustatory sweating due to aberrant regeneration of parasympathetic fibres after parotid surgery.
Salivary fistula
Sialocele
Haemorrhage - RM vein/EC artery.
Infection
Cosmetic deformity
First-bite syndrome - particularly deep parotid/parapharyngeal surgeries.

🚩RED FLAGS

Persistent unilateral swelling : tumour / chronic obstruction / granulomatous disease
Discrete firm mass: neoplasm
Facial nerve palsy : major malignant warning sign until evaluated.
Cervical/intraparotid lymphadenopathy: Malignancy/ Lymphoma/ Infection
Bilateral persistent enlargement: Sjögren’s/ HIV/ Sarcoidosis/ IgG4-related disease/ Sialosis
Recurrent meal-related pain: ductal obstruction / sialolithiasis
Failure to improve with antibiotics: Abscess/ Obstruction/ Resistant organism/ Autoimmune disease/ Malignancy

References

Al Ghabra Y, Goldin J, Pandey S. Parotitis. StatPearls. Updated June 23, 2025. NCBI Bookshelf.
Wilson KF, Meier JD, Ward PD. Salivary gland disorders. American Family Physician. 2014;89:882–888.
Schmal F, Stoll W, et al. Approach to sialadenitis. Canadian Family Physician. 2023;69:757–762.
Raad II, Sabbagh MF, Caranasos GJ. Acute bacterial sialadenitis: a study of 29 cases and review. Reviews of Infectious Diseases. 1990;12:591–601.
Brook I. Acute bacterial suppurative parotitis: microbiology and management. Journal of Cranio-Maxillofacial Surgery / related review literature.
Spiegel JH, et al. Diagnosis and management of parotitis. Review of infectious, obstructive and inflammatory causes.
Zenk J, Iro H, Klintworth N, Lell M. Diagnostic imaging in sialadenitis. Oral and Maxillofacial Surgery Clinics of North America. 2009;21:275–292.
Ji YD, Donoff RB, Peacock ZS, Carlson ER. Surgical Landmarks to Locating the Main Trunk of the Facial Nerve in Parotid Surgery: A Systematic Review. Journal of Oral and Maxillofacial Surgery. 2018;76:438–443.
Pather N, Osman M. Landmarks of the facial nerve: implications for parotidectomy. Surgical and Radiologic Anatomy. 2006;28:170–175.
de Ru JA, van Benthem PPG, Bleys RLAW, Lubsen H, Hordijk GJ. Landmarks for parotid gland surgery. Journal of Laryngology & Otology. 2001;115:122–125.
Rea PM, McGarry G, Shaw-Dunn J. The precision of four commonly used surgical landmarks for locating the facial nerve in anterograde parotidectomy in humans. Annals of Anatomy. 2010;192:27–32.
Saibene AM, Allevi F, Ayad T, et al. Treatment for parotid abscess: a systematic review. Acta Otorhinolaryngologica Italica. 2022;42:106–115.
Tan VES, Goh BS. Parotid abscess: a five-year review-clinical presentation, diagnosis and management. Journal of Laryngology & Otology. 2007;121:872–879.
Centers for Disease Control and Prevention. Clinical Features of Mumps. Updated June 5, 2024.
Centers for Disease Control and Prevention. Mumps: Pink Book-Pathogenesis, Clinical Features, Laboratory Testing and Complications.
Centers for Disease Control and Prevention. Clinical Overview of Mumps. Updated January 17, 2025.
Review of the Major and Minor Salivary Glands, Part 1: Anatomy, Infectious, and Inflammatory Processes. Radiologic/clinical review literature.
Bilateral parotid swelling: a radiological review. Insights into Imaging.
Parotid gland sialolithiasis: a comprehensive systematic review and meta-analysis. Recent systematic review of gland-preserving and endoscopic treatment approaches.

पाषाणगर्दभ

हनुसन्धौ समुद्भूतं शोफमल्परुजं स्थिरम् ।
पाषाणगर्दभं विद्यात् कफवातसमन्वितम् ॥

Correlation: Parotitis (inflammation of the parotid gland)

स्थान : हनुसन्धि - Temporomandibular joint
स्वरूप : स्थिर, कठिन पाषाणवत् शोफ (firm, stone-like swelling).
वेदना : अल्प (mild pain).
दोष : कफ-वात
निरुक्ति : पाषाणवत् काठिन्य (stone-like hardness).

चिकित्सा सूत्र

स्वेदन - Fomentation.

लेप - with paste of मनःशिला, हरताल, कुष्ठ & दारु
पाचन - Allow swelling to mature.
भेदन - Incision when fully ripened.
व्रणवत् उपचार - Manage subsequently like a wound.

References:

सुश्रुत संहिता, निदानस्थान, अध्याय 13 - क्षुद्ररोग निदान
सुश्रुत संहिता, चिकित्सास्थान, अध्याय 18 - क्षुद्ररोग चिकित्सा

Pashanagardabha (Parotitis) – Etiopathogenesis, Clinical features, Investigations, Differential Diagnosis, Complications and Management.