Master the Types and Mechanisms of Alopecia with This Quiz!

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Which type of alopecia is characterized by direct damage to the hair follicle unit, resulting in the loss of the whole hair follicle unit?

Partial alopecia

Complete alopecia

True alopecia (correct)

Primary alopecia

What is the most common cause of hair loss due to alopecia?

Hair cycle abnormality

Hair follicle inflammation (correct)

Congenital aplasia

Hair morphological abnormalities

Which phase of the hair growth cycle is characterized by a prolonged resting phase?

Anagen phase

Telogen phase (correct)

Catagen phase

Dystrophic phase

Which of the following is NOT a mechanism of primary alopecia?

Shortened Telogen phase Signup and view all the answers

In which species is ringworm not very common?

Dogs Signup and view all the answers

Which of the following is a common cause of hair loss in dogs?

Hair follicle inflammation Signup and view all the answers

Which type of alopecia is characterized by the hair shaft being damaged but not lost from the hair follicle unit?

Apparent alopecia Signup and view all the answers

Which of the following is a rare cause of alopecia characterized by the hair never growing?

Congenital aplasia Signup and view all the answers

Which species is demodicosis and pyoderma very common in?

Dogs Signup and view all the answers

Which of the following is a common cause of alopecia in immature animals?

Demodicosis Signup and view all the answers

Which of the following is a breed predisposed to hyperadrenocorticism (HAC)?

Small terriers Signup and view all the answers

Which breed is predisposed to recurrent flank alopecia?

Boxers Signup and view all the answers

Which breed is predisposed to demodicosis?

Staffies Signup and view all the answers

Which of the following is a common cause of alopecia in middle-aged or older animals?

Endocrinopathies Signup and view all the answers

Which of the following is a common cause of alopecia in entire female guinea pigs?

Ovarian neoplasia Signup and view all the answers

Which of the following is a common cause of alopecia in entire male dogs?

Sertoli cell tumours Signup and view all the answers

Which of the following is a suggestive sign of hypothyroidism in dogs?

Weight gain, lethargy Signup and view all the answers

Which of the following tests is commonly used to diagnose demodicosis?

Skin scrapings Signup and view all the answers

What are some common causes of alopecia in immature animals?

Infections (demodicosis/ dermatophytosis/ superficial pyoderma) are common causes of alopecia in immature animals. Signup and view all the answers

What are some common causes of alopecia in middle-aged or older animals?

Endocrinopathies, neoplasia, and demodicosis are common causes of alopecia in middle-aged or older animals. Signup and view all the answers

Which breed is predisposed to hyperadrenocorticism (HAC)?

Small terriers and boxers are predisposed to hyperadrenocorticism (HAC). Signup and view all the answers

Which breed is predisposed to recurrent flank alopecia?

Boxers and bulldogs are predisposed to recurrent flank alopecia. Signup and view all the answers

Which breeds are susceptible to demodicosis?

Demodicosis is common in Staffies, bulldogs, and Shar Peis. Signup and view all the answers

Explain the difference between primary and secondary alopecia.

Primary alopecia refers to the failure of hair to grow normally, while secondary alopecia refers to hair that initially grows normally but is subsequently damaged or lost. Signup and view all the answers

What is the difference between true alopecia and apparent alopecia?

True alopecia involves direct damage to the hair follicle unit, resulting in the loss of the entire hair follicle unit. Apparent alopecia, on the other hand, refers to hair shafts that are damaged but not lost from the hair follicle unit. Signup and view all the answers

What are the mechanisms of primary alopecia?

The mechanisms of primary alopecia include lack of stimulation during the anagen phase, abnormal growth factors during the anagen phase leading to miniaturized or dysplastic hairs that break off or shed, and a prolonged resting phase called the telogen phase. Signup and view all the answers

What are the common causes of alopecia?

Common causes of alopecia include congenital aplasia (rare), hair follicle inflammation (the most common cause), hair cycle abnormality (e.g., endocrine-related), and hair morphological abnormalities (e.g., malformed hair that breaks off). Signup and view all the answers

In which species are ringworm, demodicosis, and pyoderma commonly found?

Ringworm is very common in cattle, horses, cats, and hedgehogs. Demodicosis and pyoderma are both very common in dogs. Signup and view all the answers

What are some common causes of alopecia in middle-aged or older animals?

Endocrinopathies, neoplasia, demodicosis Signup and view all the answers

What are some common causes of alopecia in immature animals?

Infections (demodicosis/ dermatophytosis/ superficial pyoderma), congenital alopecia Signup and view all the answers

What are the mechanisms of primary alopecia?

Direct damage to the hair follicle unit, resulting in the loss of the whole hair follicle unit. Signup and view all the answers

Which type of alopecia is characterized by the hair shaft being damaged but not lost from the hair follicle unit?

Apparent alopecia Signup and view all the answers

Which of the following is a common cause of alopecia in entire female guinea pigs?

Ovarian neoplasia Signup and view all the answers

Master the Types and Mechanisms of Alopecia with This Quiz!

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Questions and Answers

Which type of alopecia is characterized by direct damage to the hair follicle unit, resulting in the loss of the whole hair follicle unit?

What is the most common cause of hair loss due to alopecia?

Which phase of the hair growth cycle is characterized by a prolonged resting phase?

Which of the following is NOT a mechanism of primary alopecia?

In which species is ringworm not very common?

Which of the following is a common cause of hair loss in dogs?

Which type of alopecia is characterized by the hair shaft being damaged but not lost from the hair follicle unit?

Which of the following is a rare cause of alopecia characterized by the hair never growing?

Which species is demodicosis and pyoderma very common in?

Which of the following is a common cause of alopecia in immature animals?

Which of the following is a breed predisposed to hyperadrenocorticism (HAC)?

Which breed is predisposed to recurrent flank alopecia?

Which breed is predisposed to demodicosis?

Which of the following is a common cause of alopecia in middle-aged or older animals?

Which of the following is a common cause of alopecia in entire female guinea pigs?

Which of the following is a common cause of alopecia in entire male dogs?

Which of the following is a suggestive sign of hypothyroidism in dogs?

Which of the following tests is commonly used to diagnose demodicosis?

What are some common causes of alopecia in immature animals?

What are some common causes of alopecia in middle-aged or older animals?

Which breed is predisposed to hyperadrenocorticism (HAC)?

Which breed is predisposed to recurrent flank alopecia?

Which breeds are susceptible to demodicosis?

Explain the difference between primary and secondary alopecia.

What is the difference between true alopecia and apparent alopecia?

What are the mechanisms of primary alopecia?

What are the common causes of alopecia?

In which species are ringworm, demodicosis, and pyoderma commonly found?

What are some common causes of alopecia in middle-aged or older animals?

What are some common causes of alopecia in immature animals?

What are the mechanisms of primary alopecia?

Which type of alopecia is characterized by the hair shaft being damaged but not lost from the hair follicle unit?

Which of the following is a common cause of alopecia in entire female guinea pigs?

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