In patients with myofascial pain dysfunction syndrome (MPDS), which muscle most frequently exhibits tenderness________________?
Show answer Hide answer
Answer: D. Lateral pterygoid
Explanation
Myofascial pain dysfunction syndrome frequently involves the lateral pterygoid muscle. Palpation during clinical examination elicits pronounced tenderness in this muscle. Spasm of the lateral pterygoid disrupts normal temporomandibular joint movement. MPDS is a common musculoskeletal disorder affecting masticatory muscle groups. Patients experience facial pain, muscle tenderness, and restricted jaw movement. Emotional stress and parafunctional habits like bruxism contribute to etiology.
Physical therapy and occlusal splints help relax tense masticatory muscles. Accurate muscle palpation is essential for diagnosing temporomandibular disorders. Muscle relaxants are sometimes prescribed to alleviate painful masticatory spasms. Temporalis muscles elevate the mandible but are less frequently the primary focus. Buccinator muscles assist with cheek movement during mastication without causing MPDS. Masseter muscles participate in clenching but lateral pterygoid tenderness predominates.
Related questions
Q1. During salt-split skin testing in cicatricial pemphigoid, IgG antibodies bind to which epidermal antigen:___________?
Show answer Hide answer
Answer: A. XVII collagen
Salt-split skin testing in cicatricial pemphigoid shows IgG antibodies binding type XVII collagen. BP180 is a major hemidesmosomal protein located at the basement membrane zone. Cleavage occurs through the lamina lucida...
Q2. Ectodermal dysplasia impacts all of the following structures except:___________?
Show answer Hide answer
Answer: B. Nails
Ectodermal dysplasia primarily affects ectoderm-derived structures such as hair, teeth, and sweat glands. Nails are frequently abnormal in this condition, making the question a nuanced technical inquiry. Embryologically,...
Q3. A middle-aged patient's radiograph demonstrates a cotton-wool pattern, and blood tests show elevated alkaline phosphatase. What is the tentative diagnosis____________?
Show answer Hide answer
Answer: A. Paget’s disease
Paget disease of bone features abnormal remodeling, elevated alkaline phosphatase, and a cotton-wool skull pattern. Excessive and disorganized bone resorption and formation lead to structurally weak and enlarged skeletal...
Q4. A patchy distribution of immunofluorescence along the basement membrane is characteristic of:___________?
Show answer Hide answer
Answer: C. Pemphigoid
Pemphigoid exhibits a continuous linear immunofluorescence along the epithelial basement membrane. Autoantibodies bind to hemidesmosomes located at the junction of epithelium and connective tissue. This linear deposition...
Q5. Oral manifestations in Peutz-Jeghers syndrome present as_____________?
Show answer Hide answer
Answer: D. None of the above
Peutz-Jeghers syndrome presents with perioral and intraoral freckle-like melanotic macules rather than ulcerations. The oral manifestations consist entirely of flat pigmented spots without blistering or glandular hypertr...
Q6. Heck’s disease is widely recognized by the alternative name_______________?
Show answer Hide answer
Answer: A. Focal epithelial hyperplasia
Focal epithelial hyperplasia is widely recognized by the alternative clinical name Heck disease. Human papillomavirus types thirteen and thirty-two are the established viral causes of this condition. Clinical presentatio...