Chapter 11: Head & Neck

Head & Neck clinical guide focuses on the anatomical landmarks and systematic physical examination of the head and neck, emphasizing the critical integration of physiological knowledge with diagnostic skills. Practitioners begin by utilizing the underlying cranial bones to orient themselves and identify key structures such as the parotid and submandibular salivary glands, as well as the palpable superficial temporal artery. The neck is strategically divided into anterior and posterior triangles by the sternocleidomastoid muscle, which serves as a vital boundary for locating the great vessels, including the carotid artery and internal jugular veins. Central to this assessment is the evaluation of midline structures such as the hyoid bone, thyroid and cricoid cartilages, and the thyroid gland itself, which requires careful inspection during the swallowing mechanism to detect nodules or diffuse enlargement known as goiters. The chapter details a methodical approach to palpating ten distinct groups of lymph nodes—ranging from the submental to the supraclavicular groups—noting that clinical findings like fixed, hard, or tender nodes can indicate underlying malignancy or systemic inflammatory processes. Health history collection focuses on identifying symptoms of thyroid dysfunction, such as significant weight fluctuations, temperature intolerance, and changes in skin texture, to help clinicians differentiate between hyperthyroidism and hypothyroidism. Examination techniques also extend to the hair, scalp, and facial symmetry, where specific "facies" can reveal signs of endocrine disorders like Cushing syndrome or neurodegenerative conditions like Parkinson’s disease. Furthermore, the assessment of the trachea for deviation and the auscultation for stridor are highlighted as essential steps for identifying potentially life-threatening respiratory obstructions. The guide concludes with evidence-based health promotion strategies, discussing the nuances of screening for thyroid cancer and subclinical dysfunction while noting the diagnostic importance of ultrasound for evaluating nodules that are 2 cm or larger. By mastering these examination sequences and recognizing abnormal findings like bruits or Virchow’s node, healthcare providers can effectively distinguish between common benign occurrences and serious underlying systemic diseases.