Acute moist dermatitis — commonly called hot spots or pyotraumatic dermatitis — is one of the most common presenting skin conditions in dogs. Lesions develop rapidly, sometimes over just a few hours, as self-inflicted trauma from licking, chewing, or scratching causes a superficial bacterial colonisation that accelerates tissue breakdown and spreads quickly in warm, moist skin. Clinician’s Brief describes acute moist dermatitis as typically involving surface bacterial overgrowth rather than true deep infection — though without treatment, progression to pyotraumatic folliculitis and furunculosis is possible. The prognosis when treated promptly is excellent: most hot spots heal within 7–10 days of appropriate management. The clinical challenge is not treating the acute episode — it’s the follow-up that identifies and addresses the underlying cause. Without it, recurrence is almost inevitable.
Why hot spot follow-up is really about finding the underlying driver
Hot spots do not arise spontaneously. They are the consequence of a dog being sufficiently itchy, irritated, or in pain in one specific area to self-traumatise intensively enough to break the skin and create the conditions for bacterial proliferation. Common underlying triggers include: flea bite allergy (particularly to the tail base and rump — the classic hot spot location), ear infections (hot spots on the lateral face in dogs with chronic otitis), anal gland discomfort, atopic dermatitis, contact allergies, moisture trapped under a dense coat, insect bites, and musculoskeletal pain causing the dog to focus attention on one area.
Clinician’s Brief recommends a recheck examination at 3–4 weeks after the initial visit specifically to confirm clinical resolution and to determine when antimicrobial therapy can be discontinued — and to assess whether the underlying trigger has been identified and addressed. In dogs with recurrent hot spots, Clinician’s Brief recommends ensuring all household pets are on flea prevention, assessing lateral-face hot spot patients for otitis externa, and pursuing a full dermatological workup if episodes continue.
The acute management — clipping the area, antiseptic cleaning, topical antibiotic/steroid combination, e-collar, and systemic antibiotics if indicated — is well-established. The follow-up protocol is the element most likely to determine whether this is a one-time episode or the beginning of a recurring pattern.
The hot spot follow-up timeline
| Timepoint | What to check | Red flags |
|---|---|---|
| 48–72 hours | Lesion drying out and margins clearly defined — hot spots should begin drying within 24–48 hours of appropriate treatment; e-collar in place; topical medications being applied correctly; owner not allowing dog to access the area | Lesion spreading or worsening despite treatment — may indicate deep folliculitis requiring systemic antibiotics; e-collar removed; dog still accessing the area |
| Day 7–10 | Lesion healed or near-healed — scabbing and hair regrowth beginning; e-collar removed if healed; no new lesions in other areas | Not healing by day 10 — recheck for secondary infection, treatment adequacy; new lesions appearing — systemic antibiotic course needed, underlying cause investigation urgent |
| 3–4 weeks post-treatment | Full resolution confirmed; underlying cause identified — flea control in place, ear checked, atopy assessment initiated, anal glands expressed if relevant | Recurrence before 4-week mark — underlying cause not controlled; first episode in a dog with no prior history — start systematic trigger investigation |
What to ask owners during hot spot follow-up
- Is the hot spot drying out — does it look less wet and red compared to when you left the clinic?
- Have you been applying the topical medication as directed — how many times per day?
- Has [dog name] managed to reach the area at all — has the cone stayed in place?
- Have you noticed any new areas of licking, scratching, or irritation?
- Does [dog name] have regular flea prevention — covering all pets in the household?
- Is there any head shaking, ear scratching, or ear odour that might suggest an ear infection?
- Has [dog name] been scooting or paying attention to her rear end? (Anal gland discomfort)
- Is this the first hot spot you’ve seen, or has this happened before — and if before, in the same area?
- Is [dog name]‘s coat prone to matting or holding moisture — is she groomed regularly?
- Do you have a recheck appointment booked at 3–4 weeks to confirm healing and discuss the underlying cause?
Common hot spot follow-up mistakes clinics make
Treating the hot spot without investigating the trigger. The acute episode is satisfying to manage — it responds quickly and owners are grateful. But without investigating what caused the dog to lick or scratch that area so intensively, the next hot spot is a matter of time. A follow-up call at day 7–10 that asks about flea control, ear health, and anal glands sets up the underlying cause conversation while the owner is still engaged with the episode.
Not following up at 3–4 weeks. Clinician’s Brief specifically recommends a 3–4 week recheck to confirm resolution and assess when antibiotics can be discontinued. In practice, this appointment is frequently not booked. A follow-up call at 3 weeks that asks about healing and schedules the recheck if needed — or confirms the dog is fully resolved if healing has been rapid — keeps this clinical standard in place without requiring a manual scheduling process.
Missing the lateral face hot spot/otitis connection. Hot spots on the lateral face — cheek, below the ear — are significantly associated with underlying otitis externa, where the ear irritation drives the dog to scratch the face. A follow-up call that asks specifically about ear health in a dog with a lateral face hot spot, and an ear examination at the recheck, catches this connection before the otitis becomes chronic.
How to automate hot spot follow-up without adding to your team’s workload
Nidana Loop schedules a 48-hour lesion progress check and a day 7–10 healing confirmation call automatically for hot spot cases. The 3–4 week recheck call specifically asks about recurrence, flea control compliance, ear health, and any other areas of skin irritation. For dogs with a history of recurrent hot spots, Loop flags the case for a dermatological workup discussion at the follow-up. The clinic sees summaries and flags for any case where healing is not progressing or new lesions have appeared.
See how Loop handles hot spot follow-up calls → Book a 20-minute demo
Related: Skin allergy follow-up in dogs · Ear infection follow-up · Flea allergy dermatitis follow-up