Anagen/Telogen Defluxion
Anagen/Telogen Defluxion Basic Information Definition • Telogen defluxion is hair loss associated with the telogen phase (resting phase) of hair growth. • Anagen defluxion is the loss of hair during…
Actinobacillosis
Actinobacillosis Basic Information Definition • Actinobacillus spp. is a gram-negative group of bacteria that causes a variety of clinical syndromes in horses. • Actinobacillus equuli subsp. equuli • Actinobacillus equuli…
Anaphylaxis
Anaphylaxis Basic Information Definition A life-threatening acute immediate hypersensitivity reaction occurring as a result of the rapid release of inflammatory mediators from mast cells. Affected horses may develop acute respiratory…
Algal Toxicosis
Algal Toxicosis Basic Information Definition Acute intoxication of the liver (microcystin) or central nervous system (anatoxins) subsequent to algal toxin exposure Synonym(s) • Microcystin toxicosis • Anatoxin-a toxicosis • Blue-green…
Amyloidosis
Amyloidosis Basic Information Definition Progressive systemic or cutaneous disease resulting from excessive deposition of insoluble protein polymers known as amyloid in various organs, especially the kidneys. This leads to progressive…
Aggressive Stallion Behavior
Aggressive Stallion Behavior Basic Information Definition • Aggressive behavior is defined as the overt display of dangerous reactions that may endanger people or other animals. • Aggressive behavior by the…
Amanitin Toxicosis
Amanitin Toxicosis Basic Information Definition Acute hepatotoxicity subsequent to amanitin-containing mushroom exposure Synonym(s) • Amanita toxicosis • Death cap intoxication • Amatoxin poisoning • Hepatotoxic mushroom poisoning • Amanitin poisoning…
African Horse Sickness
African Horse Sickness Basic Information Definition • African horse sickness (AHS) is caused by a double-stranded, nonenveloped RNA virus that affects members of the family Equidae and is transmitted by…
Alopecia Areata
Alopecia Areata Basic Information Definition A cell-mediated autoimmune disorder resulting in round patches of hair loss Epidemiology Genetics and Breed Predisposition A hereditary factor has been suggested. Clinical Presentation History,…
Adenovirus
Adenovirus Basic Information Definition A virus causing respiratory disease and occasionally diarrhea primarily in Arabian foals with severe combined immunodeficiency syndrome (SCID) Epidemiology Species, Age, Sex • Primarily affects Arabian…
