Flop-eared Labs shake after swimming; constant one-ear head tilt and scratch different story — otitis externa, foxtails, mites, or polyp brewing. Head shaking flings blood from broken ear vessels — aural hematoma puffy ear flap needs surgery if ignored. Home Q-tip mining worsens — vet otoscope first.
Key points at a glance
- One ear only — local problem — infection, foreign body, mass.
- Both ears itchy — allergies or mites — still vet.
- Yeasty smell, brown discharge — infection — meds needed.
- Do not insert cotton swabs deep — push debris, rupture drum.
- Head tilt, balance loss — inner ear — urgent.
Top causes
| Sign pattern | Likely cause |
|---|---|
| Smelly waxy brown | Yeast or bacterial otitis |
| Dark coffee grounds | Ear mites (especially puppies) |
| Sudden after hike | Grass awn foreign body |
| Chronic seasonal | Atopic allergy |
| Older dog one side | Polyp or tumor — rare |
Floppy ears trap moisture — swim aftercare matters.
Aural hematoma warning
Violent head shake splits ear flap blood vessels — swollen pillow ear. Drain and stitch or teacup — painful — treat infection source or recurs.
What to do before vet
- Look, don't stab — redness, swelling, discharge color
- Smell — sweet yeast vs foul
- Note recent bath water trapped, new food, flea product change
- Prevent scratching — cone if bloody
Ear cleaning solution only if drum intact — unknown drum — no flush.
What vet treatment looks like
- Cytology slide — yeast vs bacteria vs mites
- Ear pluck if thick hair — debated — professional judgment
- Topical + oral depending severity
- Allergy plan if recurrent
One course drops without recheck — relapse common.
Prevention for repeat offenders
- Dry ears after swim — drying solution vet brand
- Allergy management — Cytopoint, Apoquel, food trial
- Regular maintenance clean — frequency individual — not weekly default
Head tilt emergency
Sudden tilt, circling, vomiting — vestibular disease, stroke rare, severe inner infection — same-day ER.
The bottom line
Dogs shake head and scratch one ear constantly because something hurts or itches inside — infection, mites, or stuck plant material beat guessing. Skip deep Q-tips, book otoscope exam, and treat before hematoma balloon forms. Both-ear seasonal itch still needs allergy plan, not only drugstore drops every month.
This article is for general education only and does not replace advice from a licensed veterinarian.