Keywords: feline internal medicine, chronic kidney disease, hyperthyroidism, diabetes mellitus, inflammatory bowel disease, heart disease, hepatic lipidosis, infectious diseases, clinical signs, treatment
Feline internal medicine focuses on the diagnosis and management of disorders affecting the body’s internal systems, including the kidneys, endocrine glands, gastrointestinal tract, liver, heart, and immune system. Many adult and senior cats suffer from chronic internal diseases that require long-term monitoring and medical care. Common conditions include chronic kidney disease (CKD), hyperthyroidism, diabetes mellitus, inflammatory bowel disease (IBD), hepatic lipidosis, and cardiomyopathy. Early recognition of clinical signs and prompt diagnostic testing are essential to improve prognosis and quality of life.
Chronic kidney disease is one of the most prevalent disorders in older cats. It causes gradual loss of renal function, leading to increased thirst and urination, poor appetite, weight loss, vomiting, and dehydration. Diagnosis relies on blood tests, urine analysis, and blood pressure measurement. Treatment includes fluid therapy, renal diets, phosphate binders, and anti-nausea medications to slow disease progression.
Hyperthyroidism, caused by an overactive thyroid gland, is common in middle-aged and senior cats. Clinical signs include weight loss despite a good appetite, hyperactivity, vomiting, and rapid heart rate. Diagnosis involves thyroid hormone testing. Options for treatment include oral medication, special diets, or radioactive iodine therapy, which offers a high cure rate.
Diabetes mellitus occurs when the body cannot regulate blood sugar properly. Affected cats show increased drinking, urination, weight loss, and sometimes lethargy. Many cases are linked to obesity and inactivity. Treatment focuses on insulin injections, low-carbohydrate diets, and regular glucose monitoring to achieve stable control.
Gastrointestinal and liver diseases are also frequent in feline internal medicine. Inflammatory bowel disease causes chronic vomiting, diarrhea, and weight loss due to intestinal inflammation. Hepatic lipidosis, or fatty liver disease, is a life-threatening condition triggered by sudden anorexia, requiring aggressive nutritional support and hospitalization.
Heart disease, especially hypertrophic cardiomyopathy, may lead to breathing difficulty, lethargy, or sudden collapse. Regular cardiac screening helps detect silent cases early. Infectious diseases such as FIV, FeLV, and respiratory infections also fall under internal medicine, requiring blood testing and supportive care.
Successful management of feline internal diseases depends on accurate diagnosis, owner compliance, and ongoing veterinary supervision. With appropriate medical care, many cats with chronic internal conditions can live comfortably for years.