What's causing a red bald spot on my English bulldog's side?

Question

What cause bald spot with redness on left side of English bulldog. Pet's info: Dog | English Bulldog | Male | unneutered | 5 months and 27 days old | 50 lbs

Lotus Altholtz · Accepted Answer

Circular areas of hair loss could potentially be ringworm lesions which are caused by a fungal infection of the skin/hair. Your veterinarian can perform an Wood’s Lamp test (shining a black light on the lesion -some ringworm lesions will glow green under a black light) and a fungal culture to confirm and send home a topical antifungal lotion/cream if positive. Some dogs develop circular areas of hair loss after a vaccine, although that flank location is not typical for a vaccine. Other causes could potentially be mange (for which newer oral flea and tick preventatives such as NexGard, Simparica and Bravecto can be used to treat), a simple abrasion, hotspot (local area of irritation for which a topical prescription steroid/antibiotic ointment plus and e-collar can be effective). As ringworm is zoonotic (transmissible to people), I recommend scheduling an appointment with your local veterinarian as soon as possible! Good luck!

What's causing a red bald spot on my English bulldog's side?

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