Bald Patches After a Course of Antibiotics in a Min Pin

Flaking skin that turns into round bald patches is unlikely to be a reaction to antibiotics. More often it's a skin infection, ringworm, demodex mites, or seasonal or pattern hair loss, which is common in Min Pins and other small breeds, especially on the back and flanks.

A skin scraping, fungal culture and quick skin swab can tell these apart, and if they're all negative, a small biopsy may be needed. Many cases of pattern hair loss are cosmetic.

See your vet sooner if the patches spread, get red or crusty, or he's itchy or unwell.

See hair loss in dogs.

This is general information, not a diagnosis. Please follow your own vet's advice.