Disease Library
A comprehensive reference covering feline diseases across every major body system — causes, symptoms, diagnosis, treatment, and prevention.
Feline Mitral Valve Dysplasia
A congenital malformation of the mitral valve (between the left atrium and left ventricle), causing abnormal blood flow within the left…
heartFeline Mitral Valve Endocardiosis (Degenerative Mitral Valve Disease)
A degenerative thickening and dysfunction of the mitral valve, genuinely much less commonly discussed in cats compared to dogs, where this…
neurologicalFeline Mucopolysaccharidosis
A group of genuinely rare inherited metabolic storage diseases affecting normal processing of specific complex sugar compounds, causing…
cancerFeline Multicentric Lymphoma
A form of lymphoma affecting multiple lymph nodes throughout the body simultaneously, one of the anatomical patterns lymphoma can present…
liverFeline Multiple Hepatic Vascular Anomalies
A genuinely complex situation where a cat has more than one abnormal blood vessel connection affecting normal liver blood flow, distinct…
cancerFeline Multiple Myeloma
A cancer of plasma cells (a type of immune cell normally responsible for antibody production), genuinely rare in cats but recognized as a…
neurologicalFeline Myasthenic Crisis
A genuine emergency representing severe worsening of myasthenia gravis (covered in relation to thymoma in another entry), where the muscle…
heartFeline Myocarditis
Inflammation of the heart muscle itself, distinct from the various cardiomyopathy types given this condition's inflammatory rather than…
neurologicalFeline Myotonia Congenita
A genuinely rare genetic muscle condition causing delayed muscle relaxation after contraction, resulting in a characteristic stiff,…
poisoning toxicologyFeline Naphthalene (Mothball) Toxicosis
Poisoning from mothballs, which contain naphthalene (or in some formulations, a different but similarly toxic compound), causing effects…
poisoning toxicologyFeline Naphthalene/Mothball Toxicosis
A genuinely significant toxicity from a common household item, causing effects on red blood cells and potential neurological symptoms —…
neurologicalFeline Narcolepsy-Cataplexy
A genuinely rare neurological condition causing sudden episodes of muscle weakness or collapse, sometimes triggered by excitement or strong…
cancerFeline Nasal Adenocarcinoma
A malignant tumor arising from glandular tissue within the nasal cavity, one of the more common nasal tumor types in cats — typically…
cancerFeline Nasal Lymphoma
A form of lymphoma specifically affecting the nasal cavity, distinct from the nasal adenocarcinoma covered in another entry despite both…
parasiticFeline Nasal Mite Infestation
A genuinely uncommon parasitic infestation affecting the nasal passages and sinuses, causing symptoms that can resemble upper respiratory…
respiratoryFeline Nasopharyngeal Polyp
A benign growth arising from the middle ear or eustachian tube area that extends into the nasopharynx (the area behind the nose), distinct…
respiratoryFeline Nasopharyngeal Stenosis
An abnormal narrowing of the nasopharynx (the passage connecting the back of the nasal cavity to the throat), which restricts normal…
kidneyFeline Nephrogenic Diabetes Insipidus
A genuinely rare condition where the kidneys fail to properly respond to the hormone normally regulating urine concentration, distinct from…
kidneyFeline Nephrolithiasis (Kidney Stones, Detailed)
While kidney stones are mentioned in relation to urinary stones generally, this addresses detailed considerations specific to stones…
kidneyFeline Nephrolithiasis (Kidney Stones)
Stones that form within the kidney itself, distinct from the more commonly discussed bladder stones (urolithiasis) — kidney stones are less…
kidneyFeline Nephrotic Syndrome
A specific constellation of findings (significant protein loss in urine, low blood protein, and often fluid accumulation) that can develop…
urinaryFeline Neurogenic Urinary Incontinence
Involuntary urine leakage resulting from nerve damage affecting normal bladder control, distinct from behavioral or FLUTD-related urinary…
liverFeline Neutrophilic Cholangitis (acute form)
The acute, bacterial form within the broader Feline Cholangiohepatitis Complex (covered in its own general entry), specifically…
infectiousFeline Nocardiosis
A genuinely uncommon bacterial infection caused by soil-dwelling Nocardia organisms, typically entering through a wound or via inhalation —…