Dog Care Tips › Grooming & Hygiene

Heavy Shedding:
Telling Coat-Blow from Illness

Jun 5, 2026

Bichons are billed as a low-shedding breed: and they still shed. But one spring I found a round bare patch on my dog Gureum's side (it means "cloud" in Korean). I filed it under shedding season and moved on: the clinic filed it under ringworm. Here's the sorting method I learned that week.

Quick answer

Even loss across the whole body: shedding season. A bare patch, or red skin underneath: likely disease. Seasonal coat-blow runs 2-6 weeks in spring and fall and yields to brushing: but round bald spots, itching, or dandruff alongside means a vet visit.

A large pile of dog hair collected on the couch after a brushing session
Shedding season produces this much per day. It's normal.

Why the sudden heavy shedding?

Shedding causes run in three branches: seasonal coat-blow, stress or nutrition, and skin or hormonal disease. The first two are home-manageable: the third belongs to the clinic. So the sorting comes first.

Shedding season (normal)Disease-driven loss (clinic)
Where it falls outEvenly, everywhereSpecific patches: round, or symmetrical on both sides
Skin underneathClean and pinkRed, flaky, scabbed, darkening
ItchingLittle to noneScratching, licking, body-rubbing
TimingSpring and fall, 2-6 weeksSeason-independent, spreading
AlongsideNothingHeavy drinking, weight gain, low energy (hormonal suspects)

* Skin showing through, or hair pulling out in clumps at a tug: skip the season math and go to the clinic.

When, and for whom, is coat-blow worst?

Thick-undercoated double-coat breeds: Pomeranians, Shibas, Golden Retrievers, Corgis: dump the whole winter undercoat in spring. Daily brushing still fills a fist during those weeks. Single-coated breeds: Poodles, Bichons, Maltese: skip the visible coat-blow, but their shed hair tangles into the curls instead of dropping. These dogs don't shed less: they DROP less. Skip the brushing and it clumps inside, and the skin under a clump goes damp and breaks out.

Indoor dogs blur the calendar entirely: central heat convinces the body it's a different season, so they shed lightly year-round. Odd-looking, not abnormal.

What actually reduces the shedding?

Ours is a no-coat-blow breed, and one skipped brushing day still buys a small armpit clump by morning. Five minutes of brushing keeps preventing thirty minutes of detangling.

Coat photos make the comparison possible

Coat-blow or condition: the answer needs time-lapse. Shoot the shedding area from the same angle and post to kkeung: each keeps its date, showing whether a bare patch is widening or the loss stays even across weeks. At the appointment, the feed IS the history.

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The go-to-the-clinic signals

Round bald spots

A coin-sized circle of loss with flaky or crusted edges puts ringworm first on the suspect list. This was Gureum's case: and it can spread to humans, so speed matters.

Symmetrical loss

Both flanks or both thighs thinning in mirror image, WITHOUT itching, points toward hormones: thyroid, or adrenal (Cushing's). Heavy drinking and a sagging belly often ride along. Bloodwork sorts it.

Scratched and licked bare

Allergies, fleas, or ticks are the usual engines here. The bare patch matters less than WHY they're scratching: find that first.

Most shedding is normal-range: hard on the vacuum, easy on the dog. But if any of the three above shows up, don't sit on it. Early skin disease resolves in a week or two of medication: neglected, it runs for months.

Frequently asked questions

Can shedding be eliminated completely?
No. Hair cycling out and regrowing is normal function. The goal was never zero shedding: it's catching the dead coat with a brush before it reaches the floor. Five daily minutes of brushing shrinks the vacuuming dramatically.
They're supposedly a non-shedding breed. Why is hair coming out?
Poodles, Bichons, and Maltese shed too: the hair just snags in the curls or length instead of dropping. Which is exactly why skipping brushing mats them from the inside: and the skin under a mat trends toward hot spots. The LESS a breed drops hair, the MORE the brushing matters.
Would shaving them down reduce shedding?
A short cut makes the shed hairs smaller and less visible: the quantity is unchanged. And double-coated breeds shaved down sometimes regrow undercoat without the topcoat recovering properly: the coat comes back worse. Brushing and baths are the real management.
Do supplements reduce shedding?
If the cause is a protein shortfall or missing omega-3s: yes. If it's shedding season or a skin condition: no supplement touches it. Check the food's protein content first: still brittle, discuss adding omega-3 with the vet.
How often do I brush during shedding season?
Daily is the standard. Coat-blow drops the dead undercoat in bulk: uncollected, it drifts through the house or mats into the new growth. Double coats: undercoat rake first, slicker to finish. Five minutes a day: and brushing during the post-bath blow-dry pulls dead coat best of all.

This article is general information and does not replace a veterinary diagnosis. Talk to your vet about your dog's condition.