Non-pruritic alopecia

Question 1

Sertoli cell tumours cause a pendulous prepuce and feminisation. What affect does this have on skin?

Answer 1

Non-pruritic alopecia of penis

With linear erythema down prepuce

Question 2

How does hyperadrenocorticism affect the skin?

Answer 2

Alopecia of trunk
Comedones
Skin atrophy with striae
Prominent blood vessels

Question 3

How does hypothyroidism affect the skin?

Answer 3

Alopecia of trunk and extremities
Myxoedema ‘tragic’ facial expression - miserable heavy looking thick skin
Marked secondary infections e.g. malasthesia

Question 4

How do hypothyroidism and hyperadrenocorticism differ in terms of skin lesions?

Answer 4

Hyperadrenocorticism - thin skin (muscle loss, PUPD)

Hypothyroid - thickening of skin (weight gain, lethargy)

Question 5

What tumours cause feline paraneoplastic alopecia (shiny skin)?

Answer 5

Pancreatic and bile duct carcinomas

Question 6

What is telogen defluxion?

Answer 6

Sudden loss of hair

1-3 months post-stress (surgery, pregnancy, illness)

Question 7

What is alopecia X?

Answer 7

Alopecia of unknown cause in plush coated breeds

Causes complete alopecia and hyperpigmentation

Question 8

No treatment for alopecia X is consistently effective.How can Alopecia X be treated?

Answer 8

Neutering males
Melatonin
Deslorelin implant
May regrow after trauma (stimulation from microneedle)

Question 9

What is cyclical flank alopecia? What breed is it often seen in?

Answer 9

SEASONAL alopecia restricted to flanks only
Island shape areas with depigmentation - seen with changes in day length
Staffies

Question 10

How is cyclical flank alopecia treated?

Answer 10

Melatonin

Question 11

When taking biopsies of skin lesions, where should you pick to sample?

Answer 11

Centre of lesion - multiple
Edge of lesion
Apparently normal skin for comparison