All Free Oral Pathology and Medicine MCQs with Answers

• A. myocarditis
• B. Orchitis
• C. Uveitis
• D. Conjunctivits

Explanation: Orchitis is the classic and most important complication of mumps, particularly in postpubertal males, and may rarely impair fertility.

• A. Hemifacial microstomia
• B. LADD syndrome
• C. All of the above
• D. Mandibulo-facial dysostosis (Treacher Collins)

Explanation: Salivary gland aplasia or hypoplasia may occur in hemifacial microsomia, LADD syndrome, and mandibulofacial dysostosis.

• A. Anticholinergic drugs
• B. Dehydration
• C. Sjogren's syndrome
• D. Oral sepsis

Explanation: Anticholinergic drugs, dehydration, and Sjögren syndrome reduce salivary flow and produce xerostomia.

• A. MRI shows salt and pepper appearance
• B. Lacrimal gland enlargement is common
• C. Minor salivary gland biopsy is diagnostic test
• D. Pilocarpine is the most useful and convenient drug in its treatment

Explanation: Salivary and lacrimal gland enlargement can occur in Sjögren syndrome, but prominent lacrimal enlargement is not generally considered a…

• A. Endocrine glands
• B. Paracrine glands
• C. Exocrine glands
• D. Autocrine glands

Explanation: Sjögren syndrome is an autoimmune disease directed mainly against exocrine glands, particularly the salivary and lacrimal glands.

• A. Myasthenia gravis
• B. Multiple sclerosis
• C. SLE
• D. Sjogren's syndrome

Explanation: The break-up time test measures tear-film instability and is useful in detecting the keratoconjunctivitis sicca of Sjögren syndrome.

• A. Sjogren's syndrome
• B. Acinar cell carcinoma
• C. Mucoepidermoid cell carcinoma
• D. Pleomorphic adenoma

Explanation: Sjögren syndrome causes progressive destruction and obstruction of salivary tissue, producing punctate, fruit-laden branch, and later…

• A. Aging
• B. Alcoholism
• C. Malnutrition
• D. None of the above

Explanation: Fatty infiltration of the parotid, or sialosis, is classically associated with chronic alcoholism, although it can also occur with…

• A. Acute bacterial sialadenitis
• B. Chronic backerial sialadenitis
• C. Mumps
• D. Necrotizing sialometaplasia

Explanation: Mumps produces acute, usually non-suppurative inflammation of the parotid glands caused by a virus.

• A. Patients suffering from parkinsonism
• B. Patient undergoing radiation therapy
• C. Elderly diabetics
• D. Patients on phenothiazine drugs

Explanation: Parkinsonism itself is not classically a direct cause of reduced salivary flow, whereas head-and-neck radiation, phenothiazines and…

• A. An inflammatory disease
• B. An autoimmune disease
• C. Neoplastic disease
• D. Viral infection

Explanation: Mikulicz disease is now generally regarded as an IgG4-related autoimmune disease causing persistent enlargement of the lacrimal and…

• A. Red
• B. Yellow
• C. White
• D. Blue

Explanation: Cold exposure in Raynaud disease causes intense vasoconstriction, so the affected hand initially becomes pale or white.

• A. Caffeine
• B. Methysergide
• C. Propranolol
• D. Ergontamine tortrate

Explanation: Ergotamine tartrate constricts dilated cranial blood vessels and is used to abort an acute migraine attack.

• A. Osteomalacia
• B. Tetanus
• C. Multiple sclerosis
• D. Progressive systemic sclerosis

Explanation: Progressive systemic sclerosis causes collagen deposition and fibrosis, producing a tight mask-like face, reduced mouth opening, and rigid…

• A. Bell's palsy
• B. Myasthenia gravis
• C. TMJ dysfunction syndrome
• D. Multiple sclerosis

Explanation: Inability to close one side of the mouth indicates unilateral facial nerve paralysis, the typical presentation of Bell's palsy.

• A. Exposure to cold
• B. Tooth extraction
• C. Any of the above
• D. Local and systemic infection

Explanation: Bell's palsy has been associated with exposure to cold, local or systemic infections, and trauma such as dental procedures.

• A. Lateral pterygoid
• B. Hyoglossus
• C. Stylohyoid
• D. Massetor

Explanation: Myositis ossificans most commonly affects the masseter and causes progressive restriction of jaw movement due to heterotopic bone…

• A. Does not disturb the patient during sleep
• B. Can be treated with NSAID's
• C. Always bilateral in distribution
• D. Is a hereditary condition

Explanation: Trigeminal neuralgia usually consists of brief, electric-shock-like unilateral attacks that commonly do not awaken the patient from sleep.

• A. Clinical observation only
• B. Clinical observation and complete blood and platelet counts prior to and at frequent intervals during therapy
• C. No monitoring
• D. Complete blood investigation only if adverse symptoms arise

Explanation: Carbamazepine can rarely cause bone-marrow suppression, including leukopenia, thrombocytopenia, and aplastic anemia.

• A. Fanconi's
• B. Horner's
• C. Auriculotemporal
• D. Cushin's

Explanation: Auriculotemporal syndrome, or Frey syndrome, causes flushing, warmth, and sweating over the cheek and ear after eating, usually following…