The 5 most common diagnoses in clinical examination
Based on the work of Barak Benaryeh, DVM, DABVP, Spicewood Springs Animal Hospital, Austin, Texas
Introduction
Modern veterinary medicine increasingly utilizes sophisticated technologies and equipment for diagnosis. Nevertheless, the clinical examination remains an indispensable method. While many diseases can only be diagnosed with further testing, seeing, feeling, hearing, and palpating are essential skills that keep veterinarians at the forefront of veterinary medicine. Here are five diseases that can be detected through a careful physical examination:
What is a clinical examination?
A clinical examination is a fundamental veterinary method for assessing an animal's health. It involves a systematic examination of the animal by the veterinarian, including visual inspection, palpation, auscultation, and listening for any abnormalities. This includes checking the eyes, ears, skin, mucous membranes, heart and respiratory sounds, and overall physical condition. The clinical examination is often the first step toward diagnosis and helps identify diseases early, before they become more serious. It forms the basis for further investigations, such as blood tests or imaging procedures, if necessary.
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1. Dental diseases
Studies show a link between periodontal disease and the overall health of animals. Early detection and treatment of dental diseases significantly contribute to the quality of life and longevity of patients. Professional dental cleaning not only helps combat bad breath but also prevents systemic diseases.
Other relevant conditions that can be detected during clinical examination include malocclusions, neoplasms, stomatitis, injuries, and eosinophilic granulomas. A quick look under the tongue can often provide crucial clues. Tartar should be documented, and potential extractions should be planned. A standardized classification system (e.g., a four-level system or numerical scale) helps to plan treatments efficiently and optimize the use of surgical capacity in the clinic.
2. Otitis (ear infection)
An otoscopic examination should be performed on every patient. Otitis It is often a symptom of an underlying disease, frequently caused by allergies. Other causes can include parasites (Demodex, Otodectes, Sarcoptes spp.), foreign bodies, neoplasms, or autoimmune diseases.
Acute cases typically present with redness and swelling of the tissue, while chronic cases are characterized by hyperkeratosis, hyperpigmentation, and lichenification. Additionally, narrowing of the ear canal due to fibrosis or ossification may occur. It is important to document whether swelling or pain restricts examination of the eardrum.
3. Eye diseases
Assessing the structure of the eye is an essential part of the clinical examination. Both external (conjunctiva, eyelids) and internal structures (anterior chamber, lens, fundus) should be examined.
A distinction is made between primary eye diseases and secondary ocular symptoms of systemic diseases. Among the most common primary diseases that can be diagnosed during examination are conjunctivitis, anterior uveitis, cataracts (not to be confused with lenticular sclerosis), entropion, distichiasis, corneal ulcers, and fundus changes.
Secondary eye diseases can be caused by systemic hypertension, infections, or neoplasms. Fundus examinations require experience; therefore, it is important to regularly examine the fundus of all patients and identify any abnormalities.
4. Heart murmurs & arrhythmias
Heart murmurs or arrhythmias often go unnoticed by pet owners, making clinical examination all the more important. Heart murmurs are caused by vibrations of heart structures or turbulent blood flow, while arrhythmias result from disturbances in electrical conduction.
Studies show a correlation between the loudness of a heart murmur and the severity of heart disease in dogs. A quiet murmur often indicates a mild condition, while a loud murmur can point to serious heart disease. Young dogs with persistent heart murmurs should be examined for congenital heart defects.
Diagnosis in cats is more complex: many cats have heart murmurs without obvious heart disease, while others have heart disease without a murmur. Studies show that up to 21% of healthy cats have heart murmurs. Echocardiography remains the best follow-up examination to establish a definitive diagnosis.
5. Anemia
Anemic patients are often recognizable by pale to white mucous membranes. During the clinical examination, all well-perfused areas should be checked, including the oral mucosa, sclera, and thin skin areas (e.g., inner ear).
Normal mucous membranes are pink with a rapid capillary refill time. Color abnormalities can indicate various diseases:
- Pale to white: anemia
- Dark purple to brown: Heart defects, methemoglobinemia, lung diseases
- Gray: cyanosis
- Yellowish: Liver disease or hemolysis
Anemia is divided into three main categories: blood loss, insufficient production of red blood cells, or their destruction. Blood loss can occur internally or externally (e.g., through gastrointestinal bleeding). Insufficient production often occurs in connection with chronic diseases such as kidney failure or neoplasms. Hemolysis (destruction of red blood cells) often leads to jaundice and can be triggered by immune disorders, infections, poisoning, or sepsis.
The prognosis and treatment depend on the exact cause and often require further diagnostic testing.
The 5 most important diagnoses
1. Dental diseases
Early signs include tartar buildup, bad breath, and sensitive gums. Early treatment significantly improves quality of life.
2. Otitis
Reddened, painful ears, possibly with crusting. Possible causes include allergies, parasites, or foreign bodies.
3. Eye diseases
Symptoms include redness, cloudy eyes, and increased blinking. Early diagnosis protects eyesight.
4. Heart murmurs & arrhythmias
Often unnoticed, but a precise auscultation can detect heart disease in its early stages.
5. Anemia
Recognizable by pale mucous membranes and rapid fatigue. Often a sign of underlying health problems.
Summary
Clinical examination is an indispensable part of veterinary diagnostics. A thorough clinical examination can detect early signs of dental diseases, ear infections, eye diseases, heart murmurs, and anemia. A systematic clinical examination makes it possible to identify changes in the mucous membranes, heart and respiratory sounds, as well as skin and eye abnormalities.
The clinical examination serves as the basis for further diagnostic steps and ensures optimal treatment. Every veterinarian should routinely perform a clinical examination to detect diseases early. The clinical examination is essential for the health of animals. A detailed clinical examination leads to better treatment decisions. With a thorough clinical examination, many diseases can be detected in their early stages.
The clinical examination should never be neglected, as it is a valuable source of information. A precise clinical examination helps to plan the best possible therapy for the patient. Pet owners benefit from regular clinical examinations of their animals, as this allows for the early detection of diseases. The clinical examination is a central component of veterinary practice and should always be performed with care. Thanks to the clinical examination, veterinarians can make informed decisions.
Clinical examination provides valuable insights for treatment planning. Every clinical examination contributes to improving veterinary care. A comprehensive clinical examination helps to increase the quality of life for animals. Through clinical examination, veterinarians can intervene in a timely manner and prevent serious changes. Clinical examination enables the early detection and targeted treatment of diseases.
A thorough clinical examination allows for a better assessment of an animal's health. Regular clinical examinations are of great importance for every animal. Routine clinical examinations help to detect serious illnesses early. The clinical examination is a simple yet effective way to monitor the health of animals.
Physical examination remains an indispensable component of veterinary diagnostics. Many diseases can be detected and treated early through targeted examination techniques. The combination of clinical experience and modern diagnostic procedures ensures optimal patient care.