Demodex

Question 1

Give 3 reasons for adult demodecosis to appear?

Answer 1

Inmunosupresión: iatrogenic, endocrinopathy (diabetes, hypothyroid, hyperadrenocorticism), nutrition, estrus

Question 2

Difference between generalised and localised demodex?

Answer 2

Localised: less than 5 nodules, may be pruritic, usually less than a year old
Generalised: large area, multiple areas on body infected, secondary infection

Question 3

How do we diagnose demodex?

Answer 3

Skin scrapes (as live deep) or hair pluck round sensitive areas. Should also test for secondary infection (bacteria and fungal)

Question 4

Only licensed treatment for generalised demodex? When is it contraindicated?

Answer 4

Amitraz
Do not use if deep pyoderma or with otherMAO inhibitors

Question 5

How do we treat localised demodex?

Answer 5

Not always requires
Topical benzoyl peroxide, amitraz or rotenone