Acute Moist Dermatitis:  Hot Spots

What’s a Hot Spot?

Acute moist dermatitis is a localized, moist, inflamed region in the skin.  It is often referred to as a hot spot.

How does it form?

A hot spot typically forms due to some type of irritation to the skin.  The area becomes puritic (itchy) and the pet starts to scratch.  As the itching worsens, pets continue to lick and chew creating a vicious cycle of irritation, itching, chewing, and skin damage.  Eventually infection sets in.

What causes hot spots to start?

Anything that irritates the skin causes hot spots.  Fleas and skin allergies are two of the main causes.  However, allergic reactions, ear infections, insect bites, mange mites, and poor grooming techniques or products are other potential skin irritants.

























Who is more likely to get hot spots?

Long-haired pets or pets with very thick undercoats are more likely to develop hot spots.

What do hot spots look like?

These lesions are very easy to identify.  Look for a region of moist fur.  There is normally some hair loss and you can see the underlying bright red and inflamed skin surface.  The skin typically oozes a purulent discharge.  Pets are often painful and do not want you touching the lesions.

























How are hot spots treated?

Your Veterinarian will treat the lesion….

Clip and Clean with Antiseptic
Give Cortisone to Stop Itching
Give Antibiotics to Treat Infection
Manage Pain (when necessary)

How do you manage your pet’s home care?

Make sure your pet cannot lick or chew the hot spot (E Collar)
Offer plenty of water to your pet (especially if he/she received corticosteroids)
Give all meds (both oral and topical) as prescribed by your Veterinarian
Take care of any underlying Flea problems or Allergies

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The irritation in this patient has developed due to fleas.  In fact, most fleas dermatitis will occur over the dorsal pelvic region and the tail base.
Close-up View of pelvic area.  Hair loss, red, and irritated skin.
Close-up View of the tail.  Hair loss, red, and irritated skin.  Oozing some from skin surface.