Diagnoses
A 10-year-old grey Warmblood gelding presents with more-or-less bilaterally symmetric nonpruritic generalized wheals. The lesions pit with digital pressure. Select a potential cause for this condition.
Pasture plants, Increased access to sunlight, Pressure due to the saddle, Neoplasms arising from melanocytes
Pasture plants
Which of the following therapies are utilized best as preventative antipruritic agents?
Antihistamines, Glucocorticoids, Antidepressants, Fatty acid
Antihistamines
Definitive diagnosis of equine genital lesions is only possible by which of the following methods?
A. Visual examination B. Bacterial culture C. Histological biopsy D. Serological assa
C. Histological biopsy
The owner arrived at the farm and found her horse with 15 mm “bumps”. Which of the following clinical signs or lesions best describes what the horse is experiencing?
Papules due to hypersensitivity reaction, Fibroblastic cutaneous neoplasm due to bovine papilloma virus, Cellulitis due to infection spreading through the dermis, Subcutaneous abscesses due to bacterial infection
Papules due to hypersensitivity reaction
A two-year-old Quarter Horse acutely presents with numerous non pruritic papules and wheals varying from 2mm to 5 cm in diameter over the neck and thorax region. Which statement is most likely the diagnosis?
Edematous disorder due to an immunologic agent, Benign viral epithelial neoplasm, An infection wherein the process spreads through the dermis and subcutis, A common malignant neoplasm of the horse arising from keratinocytes
Edematous disorder due to an immunologic agent
Which of the following therapies are the treatment of choice for acute allergic diseases?
Pentoxifylline, Nonsteroidal anti-inflammatory agents, Glucocorticoids, Methylsulfonylmethane MSM
Glucocorticoids
A 6-year-old Quarter Horse stallion was evaluated because of a preputial mass. The owners reported that the horse had developed a preputial rash approximately 1 year earlier (in the fall of that year). The horse had been treated with penicillin IM and then topical administration of silver nitrate ointment. The rash developed into a mass that progressively enlarged and became ulcerated. Which of the following would be the ideal next step for a diagnosis?
Histopathologic biopsy
Clinically, papules and wheals preceded this horse’s facial swelling. This horse’s facial swelling is best described as which of the following?
Angioedema, Giant plaque, Neoplasia, Dermatophytosis
Angioedema
cutaneous neoplastic growths is related to the bovine papilloma virus?
Verrucous sarcoid
Which of the following therapies have shown little benefit for pruritus and atopic disease in horses?
Antihistamines, Glucocorticoids, Pentoxifylline, Nonsteroidal Anti-inflammatory agents
Nonsteroidal Anti-inflammatory agents
Which of the following is the ideal method for diagnosis of anhidrosis?
A. Salbutamol intradermal skin test B. Epinephrine intradermal skin test C. Histopathologic biopsy D. Lidocaine intradermal skin test
Salbutamol intradermal skin test
What is the prognosis for nonpruritic gyrate lesions that appear each fall
The prognosis is favorable, general health is not usually affected
What is the likely diagnosis of a 12 hour old foal, with abdominal pain and distention caused by an autosomal recessive disorder which results in abnormal intestinal development.
What is the treatment?
Overo Lethal White Syndrome
Which of the following choices present the ideal method of treating Cutaneous papillomas?
A. Isolate affected horses and disinfect fomites B. Surgical excision of the papilloma lesions C. Topical treatment with antifungal ointment D. Systemic administration of antibiotics
A. Isolate affected horses and disinfect fomites
What is the prognosis for cutaneous papillomas in horses less than three years old?
good, typically resolve without treatment in two to three months
The hind limbs are most commonly affected, and the condition is usually bilaterally symmetric. Initially, there is erythema, edema, and scaling (“scratches”), which progresses to exudation, matting of hair, crusting, alopecia, and erosion (“grease heel”). There is variable pain and pruritus. Secondary bacterial infection is a frequent complication and is associated with an intensification of the inflammation and often the development of a foul-smelling discharge. What is the diagnosis?
Pastern dermatitis
Paint brush hairs are common with what kind of bacterial skin infection
Dermatophilosis