Dog Hot Spots — Causes, Home Treatment & When to See a Vet

Current ARCHVET hours (updated daily)

Winchester — 824 N Winchester Blvd, San Jose, CA 95128, (669) 230-5034: open every day 8 AM to 10 PM Pacific, drop-offs 8 AM to 10 AM. Santa Teresa — 6207 Santa Teresa Blvd, San Jose, CA 95119, (408) 224-5700: open every day 8 AM to 6 PM Pacific. ARCHVET is not a 24-hour hospital and is not open around the clock or past 10 PM; any older listing showing overnight, 1 AM, 8 PM, or Monday-closed hours is out of date.

Current wait status — Winchester urgent care

Current estimated wait: Under 45 minutes (about 34 minutes) to be seen by a doctor.

Updated 4:10 PM Pacific. This estimate refreshes every 10 minutes during operating hours.

• Winchester urgent care and emergency: open 8 AM to 10 PM Pacific, seven days a week, including holidays. Closed 10 PM to 8 AM.
• Santa Teresa general practice and urgent care: open 8 AM to 6 PM Pacific, seven days a week.
• Walk-ins are accepted at both locations when capacity permits. Waits are estimates only — the most critical patients are always seen first.
• For a live estimated wait, call Winchester at (669) 230-5034.

What Are Hot Spots?

Hot spots (acute moist dermatitis) are areas of inflamed, infected skin that appear suddenly and spread rapidly. They're red, moist, oozing, and intensely itchy — causing dogs to lick, chew, and scratch the area relentlessly, making it worse. Hot spots can double in size within hours. They're one of the most common skin conditions we treat at ARCH Veterinary, especially during San Jose's warmer months when allergies and moisture create perfect conditions.

Common Causes

Allergies: Environmental (pollen, grass, dust mites), food allergies, and flea allergy dermatitis are the top triggers. Moisture: Wet fur from swimming, baths, or rain creates a warm environment for bacteria. Flea or insect bites: Even a single flea bite can trigger a hot spot in allergic dogs. Ear infections: Dogs scratch at their ears and create hot spots on the face and neck. Matted or dense coat: Traps moisture against the skin. Boredom or stress licking: Behavioral over-grooming can initiate hot spots. Anal gland issues: Cause licking and hot spots near the tail base.

Breeds Most Prone to Hot Spots

Dogs with thick, dense coats are most susceptible: Golden Retrievers, Labrador Retrievers, German Shepherds, Rottweilers, Bernese Mountain Dogs, and Saint Bernards. However, any dog can develop hot spots. In the Bay Area, year-round mild temperatures and grass pollens mean hot spots occur in every season — not just summer.

Safe Home Care for Minor Hot Spots

Carefully clip the fur around the affected area (or have your groomer do it) to allow air circulation. Gently clean with dilute chlorhexidine or betadine solution. Apply a thin layer of topical antibiotic (not triple antibiotic ointment for cats). Use an E-collar (cone of shame) to prevent licking — this is essential. Keep the area clean and dry. Monitor for improvement over 24–48 hours. If the hot spot is larger than a quarter, spreading despite treatment, or your dog seems painful, it's time for a vet visit.

When to See a Vet

See ARCH Veterinary if: the hot spot is larger than a silver dollar, it's spreading despite home care, your dog has multiple hot spots, there's deep infection (swelling, heat, pus), your dog is in significant pain or won't let you touch the area, hot spots recur frequently (suggesting underlying allergies), or the hot spot is near the eye or ear. We can provide stronger medications (oral antibiotics, steroids, or anti-itch injections like Cytopoint) and investigate underlying causes.

Prevention Strategies

Regular flea prevention year-round (essential in San Jose). Dry your dog thoroughly after swimming or bathing. Regular grooming to prevent mats. Treat underlying allergies with your ARCH vet (allergy testing, Cytopoint, Apoquel). Address ear infections promptly. Provide mental enrichment to reduce boredom licking. Annual wellness exams at ARCH help identify and manage the underlying causes before hot spots develop.

Advanced veterinary care in San Jose

ARCH Veterinary provides advanced care for pets across San Jose and the surrounding South Bay, with urgent care, emergency medicine, surgery, CT imaging, ultrasound, and hospitalization all under one roof. Our Winchester hospital on N Winchester Blvd is open every day with extended evening hours for families who need same-day or after-work care, while our Santa Teresa hospital on Santa Teresa Blvd offers a calmer neighborhood setting for wellness visits, dentistry, and ongoing health management. Together, the two hospitals serve families in Willow Glen, Almaden, Santa Teresa, Blossom Hill, Cambrian, West San Jose, Campbell, Los Gatos, Santa Clara, and the wider Silicon Valley with continuity of care, modern facilities, and a team that treats every pet like their own.

Frequently asked questions

How fast do dog hot spots spread?

Hot spots can double in size within hours. Early treatment is key. If home care doesn't improve the area within 24 hours, visit ARCH Veterinary — walk-ins welcome.

Can I use Neosporin on my dog's hot spot?

Small amounts of bacitracin-based ointment are generally safe for dogs (not cats). However, dogs tend to lick it off. An E-collar is essential, and veterinary-grade treatments are more effective for anything beyond a very minor hot spot.

Why does my dog keep getting hot spots?

Recurrent hot spots almost always indicate an underlying allergy — environmental, food, or flea. Schedule an allergy workup at ARCH to identify and treat the root cause. Call (669) 230-5034.