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'''In January, a 1-year-old dog is presented for treatment of ‘ringworm’. The owner reports the dog has developed a ‘ringworm’ lesion on its dorsal back. There are two other dogs in the house along with three indoor cats, and none of these animals show signs of skin disease. The dog in question sleeps with the owner and she doesn’t have skin lesions. Dermatological examination reveals a focal area of noninflammatory hair loss in the right lateral lumbosacral area. A Wood’s lamp examination is negative. The medical record indicates the dog received a subcutaneous injection of glucocorticoids 3.5 months ago at the end of September for seasonal atopy. The location of the injection was recorded as ‘subcutaneous over on the dorsum’. The dog is frequently groomed, and the owner has a penchant for having ribbons braided into the dog’s hair coat.'''

'''In January, a 1-year-old dog is presented for treatment of ‘ringworm’. The owner reports the dog has developed a ‘ringworm’ lesion on its dorsal back. There are two other dogs in the house along with three indoor cats, and none of these animals show signs of skin disease. The dog in question sleeps with the owner and she doesn’t have skin lesions. Dermatological examination reveals a focal area of non-inflammatory hair loss in the right lateral lumbosacral area. A Wood’s lamp examination is negative. The medical record indicates the dog received a subcutaneous injection of glucocorticoids 3.5 months ago at the end of September for seasonal atopy. The location of the injection was recorded as ‘subcutaneous over on the dorsum’. The dog is frequently groomed, and the owner has a penchant for having ribbons braided into the dog’s hair coat.'''

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Topical and subcutaneous glucocorticoids are also associated with focal areas of alopecia.<br><br>

Topical and subcutaneous glucocorticoids are also associated with focal areas of alopecia.<br><br>

The most useful diagnostic tests include skin scrapings, impression smears, dermatophyte cultures, and a skin biopsy. These tests were normal or negative.

The most useful diagnostic tests include skin scrapings, impression smears, dermatophyte cultures, and a skin biopsy. These tests were normal or negative.

|l1=

|l1=Alopecia and Hypotrichosis#Non-inflammatory

|q2=The skin biopsy findings revealed a focal area of thinning of the dermis and epidermis and atrophy of the hair follicles. What is the most likely diagnosis, and what management recommendations should be made?

|q2=The skin biopsy findings revealed a focal area of thinning of the dermis and epidermis and atrophy of the hair follicles. What is the most likely diagnosis, and what management recommendations should be made?

|a2=

|a2=

The skin biopsy findings were interpreted as compatible with an endocrine alopecia. This was a case of post-steroid injection alopecia. The dog’s hair regrew over the next 6 months, and the lesion recurred in the fall when the dog again received a glucocorticoid injection.<br><br>

The skin biopsy findings were interpreted as compatible with an endocrine alopecia. This was a case of post-steroid injection alopecia. The dog’s hair regrew over the next 6 months, and the lesion recurred in the fall when the dog again received a glucocorticoid injection.<br><br>

Post-injection hair loss is a possible side-effect of repositol glucocorticoids, and owners should be warned that hair loss could occur at the site.

Post-injection hair loss is a possible side-effect of repositol glucocorticoids, and owners should be warned that hair loss could occur at the site.

|l2=

|l2=Endocrine effects on the skin - Pathology

|q3=List the major etiologies that cause focal damage to hair follicles and give at least one disease example in each category.

|q3=List the major etiologies that cause focal damage to hair follicles and give at least one disease example in each category.

|a3=

|a3=

*immune-mediated diseases (pemphigus, sebaceous adenitis, alopcecia areata), and  

*immune-mediated diseases (pemphigus, sebaceous adenitis, alopcecia areata), and  

*trauma (burns, vascular damage, i.e. traction alopecia, dermatomyositis) (Paterson, 2002).

*trauma (burns, vascular damage, i.e. traction alopecia, dermatomyositis) (Paterson, 2002).

|l3=

|l3=Alopecia and Hypotrichosis

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