Immunologic diseases.

The research article discusses a range of skin diseases in horses that have a strong evidence of being caused by the immune system. The article provides details about each of these diseases, including their symptoms, ways to diagnose them, and the challenges in treating these medical conditions.

Immunologically Induced Equine Dermatoses

The paper discusses various reactive disorders and autoimmune diseases in horses. The focus is on diseases that affect the horse’s skin and are suspected to be caused by the animal’s own immune system.

• Reactive Disorders: These include urticaria, Culicoides hypersensitivity, erythema multiforme, drug eruptions, and systemic granulomatous disease. Reactive disorders are diseases that occur in response to an allergen or irritant, invoking an immune response in the animal.
• Autoimmune Diseases: Pemphigus foliaceus, pemphigus vulgaris, bullous pemphigoid, and cutaneous lupus erythematosus are autoimmune diseases discussed in the paper. In autoimmune diseases, the horse’s immune system mistakenly attacks its own body cells, causing various symptoms.

Clinical Signs and Diagnostic Features

The paper delves into clinical signs and diagnostic features of the discussed diseases. These help in identifying the presence of a disease. Clinical signs are observable changes in an animal’s normal body functions while the diagnostic features refer to peculiarities or characteristics in the medical condition that assist in making the diagnosis.

• Clinical Signs: These signs vary depending on the specific disease. They can include changes in the coat, hair loss, rashes, and irritated or inflamed skin.
• Diagnostic Features: Specific diagnostic features for each disease are defined. These might include biopsy findings, blood tests results, and responses to certain stimuli or treatments.

Challenges in Diagnosing and Managing the Disease

The article acknowledges the challenges veterinarians face in making a definitive diagnosis and managing the clinical signs of the diseases. These challenges can include:

• A broad overlap in symptoms among the different diseases, making diagnosis astute
• The unpredictable nature of the disease progress
• Lack of specific tests for some diseases
• Requires long-term to lifelong management, given the chronic nature of these diseases