Disease and conditions 

Kernig’s sign is an early clinical indicator of meningeal irritation, commonly seen in meningitis and subarachnoid hemorrhage. Prompt recognition allows for immediate diagnostic evaluation and life-saving treatment.

Erythema is a clinical manifestation of skin inflammation or irritation caused by diverse factors including infections, autoimmune disorders, drug reactions, and burns. Recognizing the underlying cause, assessing severity, and providing timely emergency interventions and supportive care are essential for effective management in healthcare settings.

Claude’s hyperkinesis sign is a increased reflex activity of weakened (paretic) muscles in response to painful stimuli, indicating upper motor neuron involvement.

Vulvar lesions are lumps, nodules, papules, vesicles, or ulcers caused by infections, benign or malignant tumors, dystrophies, or dermatoses, often presenting with pruritus, pain, dysuria, or dyspareunia. Accurate history, physical examination, and laboratory testing are essential for diagnosis, management, and counseling.

Abnormal pulse rhythm indicates irregular arterial contractions, often reflecting underlying cardiac arrhythmias that may range from benign to life-threatening. Prompt recognition, ECG monitoring, and management are essential to prevent complications and maintain cardiac output.

Grief is a deep sorrow or anguish experienced after loss, separation, or bereavement. In terminal illness, it may precede acceptance of dying; unlike depression, grief usually progresses through stages and resolves over time.

McMurray’s sign is a clinical test for medial meniscus injury, identified by a palpable or audible click during tibial rotation on the femur. Positive findings, along with joint line tenderness and restricted motion, warrant orthopedic evaluation and imaging.

Tracheal deviation is displacement of the trachea from the midline, often caused by conditions that shift mediastinal structures such as tension pneumothorax, atelectasis, mediastinal tumors, or retrosternal thyroid. Because it may signal life-threatening respiratory compromise, prompt assessment, emergency support (oxygen, semi-Fowler’s, possible chest tube), and evaluation for underlying causes are essential.

Fecal incontinence is the involuntary passage of feces due to impaired anal sphincter control, resulting from gastrointestinal, neurologic, or psychological disorders, surgery, or drug effects. Its severity, pattern, and associated symptoms guide diagnosis and individualized management.

Macewen’s sign is a “cracked-pot” sound heard on light percussion over an infant’s anterior fontanel. It is an early indicator of hydrocephalus and may also be seen in cerebral abscess.

Are exaggerated reflex responses often caused by upper motor neuron lesions or electrolyte imbalances like hypocalcemia or hypomagnesemia. They may signal serious neurologic, metabolic, or obstetric conditions and require thorough clinical evaluation and appropriate management.

Urticaria (hives) is a hypersensitivity reaction causing transient, pruritic wheals from histamine release, triggered by drugs, foods, infections, or stress; chronic cases last > 6 weeks, and severe forms may present with angioedema or anaphylaxis. Management includes identifying triggers, antihistamines, corticosteroids for severe attacks, and emergency airway support if anaphylaxis occurs.

Cat’s cry syndrome (Cri-du-chat) is a rare chromosomal disorder marked by a high-pitched, kitten-like cry, microcephaly, and profound developmental delay. It is caused by a deletion on the short arm of chromosome 5 and may lead to multiple congenital anomalies.

Hoover’s sign is inward movement of one or both costal margins during inspiration, indicating diaphragmatic flattening from intrathoracic disorders or emphysema. In a contralateral leg-lifting test, absent movement suggests hysteria or malingering.

Pruritus is an unpleasant, often nocturnal itching sensation affecting the skin, mucous membranes, or eyes, caused by dermatologic, systemic, infectious, or drug-related conditions. Management includes identifying and treating the underlying cause, controlling symptoms with antihistamines or corticosteroids, and patient education to avoid scratching.

Raccoon eyes are bilateral periorbital bruising not caused by direct facial trauma, commonly indicating a basilar skull fracture or meningeal tear. They signal underlying cranial injury and require careful neurologic assessment, monitoring for cerebrospinal fluid leakage, and appropriate imaging and supportive care.

Harlequin sign: Temporary reddening of one half of a neonate’s body, especially in low-birth-weight infants, typically appearing when the infant is placed on its side and disappearing when supine. It is a benign, transient vascular phenomenon.

Breast dimpling is a clinical sign often indicating underlying breast malignancy or fibrosis, caused by tumor invasion or inflammatory processes tethering the skin. Prompt evaluation with imaging and biopsy is essential for accurate diagnosis and management.

Subcutaneous crepitation is a critical clinical sign indicating air or gas in soft tissues due to trauma, infection, or iatrogenic causes, requiring urgent evaluation. Its presence mandates airway monitoring and prompt identification of underlying life-threatening conditions like pneumothorax, esophageal rupture, or gas gangrene.

A ventricular (S3) gallop is a low-pitched early diastolic heart sound caused by rapid ventricular filling, often indicating volume overload or impaired myocardial contractility. It is a key sign of heart failure, cardiomyopathy, or valvular disorders and may form a summation gallop when coexisting with S4.

Mania is a mood disturbance marked by heightened energy, euphoria, rapid thoughts, and pressured speech. It typically occurs during the manic phase of bipolar disorder.

Apnea is the temporary or permanent cessation of spontaneous breathing, often caused by airway obstruction, brainstem dysfunction, or neuromuscular failure, and requires immediate intervention to maintain airway patency and support ventilation. Prompt recognition and management are critical to prevent respiratory arrest and death.

Clenched fist sign is a placement of a clenched fist against the chest by a patient, often seen in angina pectoris, indicating the constricting or oppressive nature of substernal pain.

Hepatomegaly is the abnormal enlargement of the liver caused by congestion, inflammation, infiltration, neoplasia, or metabolic disorders, often detected on physical examination or imaging. Its clinical significance depends on the underlying disease, ranging from reversible fatty liver to life-threatening cirrhosis, hepatitis, or malignancy.

Jaw pain can arise from the maxilla, mandible, or TMJ and may reflect local, systemic, or life-threatening conditions such as MI or tetany. Diagnosis relies on careful history, examination, and targeted investigations, with management addressing the underlying cause and symptom relief.

A narrowed pulse pressure, defined as a difference of less than 30 mm Hg between systolic and diastolic pressures, often occurs in late stages of shock, heart failure, or cardiac tamponade and reflects decreased cardiac output, increased peripheral resistance, or reduced intravascular volume. Early recognition and monitoring are critical to detect associated hypotension, poor perfusion, and declining level of consciousness.

Desault’s sign is a restricted arc of rotation of the greater trochanter, seen in intracapsular femoral fractures; the trochanter rotates only along the femoral axis, producing a smaller arc than normal hip rotation.

Hyperactive bowel sounds are loud, frequent intestinal noises indicating increased motility, often caused by infections, inflammation, or bowel obstruction. Prompt assessment and intervention are crucial to address potentially serious underlying conditions.

Hoehne’s sign is the absence of uterine contractions during delivery despite repeated doses of oxytocic drugs. It indicates a ruptured uterus.

Gowers’ sign: In adults, irregular iris contraction in response to light, seen in tabes dorsalis; in children, a maneuver of using hands on thighs to rise from the floor, indicating proximal muscle weakness in Duchenne or Becker muscular dystrophy.

Darier’s sign is a whealing and itching of pigmented macules upon rubbing, indicative of urticaria pigmentosa (mastocytosis).

Cyanosis is a bluish discoloration of the skin or mucosa due to inadequate oxygenation or perfusion. It signals serious cardiopulmonary or vascular pathology requiring prompt evaluation and oxygenation support.

A pericardial friction rub is a scratching or grating heart sound caused by inflamed pericardial layers, most often indicating acute pericarditis. Diagnosis relies on auscultation of its triphasic sound along the left sternal border, monitoring for complications, and treating the underlying cause.

Bárány’s sign (Caloric test): Irrigation of the ear with warm water causes rotary nystagmus toward the irrigated side, while cold water causes nystagmus away; absence of this response indicates labyrinthine dysfunction.

Entropion is an inward turning (inversion) of the eyelid, usually the lower lid, causing eyelashes to rub against and irritate the cornea. It may result from aging, trauma, muscle spasm, ocular cicatricial diseases, or infections like trachoma.

Lymphadenopathy is an enlargement of lymph nodes due to infection, autoimmune disease, or malignancy, and can be localized or generalized. Thorough history, examination, and appropriate investigations are essential to identify the underlying cause and guide management.

Crossed extensor reflex is an extension and adduction of one leg with fanning of the toes in response to stimulation of the opposite leg. Normally present in neonates and disappears by 6 months; persistence indicates CNS lesion or anoxic brain injury.

Hypoesthesia is a reduced sensitivity of the skin to touch, temperature, or pain, indicating possible nerve or sensory pathway impairment.

Vomiting is the forceful expulsion of gastric contents, often preceded by nausea, and may result from gastrointestinal, metabolic, infectious, neurologic, cardiac, or drug-related causes. Careful assessment of onset, frequency, character of vomitus, associated symptoms, and underlying disorders is essential for diagnosis and management.

Mouth lesions are diverse, ranging from ulcers to nodules and vesicles, caused by infections, systemic diseases, drugs, trauma, or radiation. Thorough history, oral examination, and identification of underlying causes are essential for diagnosis and management.