Common causes of Hotspots and Fungal Infections in Dogs (And How to Stop the Cycle)

Causes, Prevention & Natural Treatment

If you’re reading this, chances are you’ve watched your dog scratch themselves raw, discovered an angry red patch that appeared overnight, or dealt with that unmistakable musty smell of a fungal infection. Again.

You’ve probably tried medicated shampoos, antifungal creams, maybe even multiple vet visits. The infection clears up. And then, a few weeks later, it’s back.

Here’s what nobody tells you: treating the skin is treating the symptom, not the cause. Hotspots and fungal infections are almost always signals that something deeper is off—usually involving inflammation, immunity, or both.

Let me explain what’s actually happening and why the solution involves looking beyond the skin.

What Are Hotspots, Really?

Hotspots—technically called acute moist dermatitis—are localised areas of skin inflammation and bacterial infection. They often appear suddenly, spread rapidly, and look angry: red, moist, sometimes oozing, and usually accompanied by hair loss in the affected area.

The trigger is typically self-trauma. Your dog scratches, licks, or chews at an itchy spot, breaking the skin barrier. Bacteria that normally live harmlessly on the skin surface suddenly have access to deeper tissue. Moisture gets trapped under the fur. Within hours, you have an inflamed, infected mess.

But here’s the question most people don’t ask: Why was the dog itchy in the first place?

Understanding Fungal Infections in Dogs

Fungal infections—including yeast overgrowth (Malassezia) and ringworm—operate on a similar principle. The fungi responsible are often already present on your dog’s skin. They become a problem when conditions allow them to proliferate.

Common signs include:

• Persistent why your dog is always itching, especially around ears, paws, and skin folds
• A musty, yeasty, or “corn chip” smell
• Greasy or flaky skin
• Dark, thickened skin in chronic cases
• Recurring ear infections

In India’s humid climate, fungal issues are endemic. But humidity alone doesn’t explain why some dogs struggle constantly while others living in the same conditions stay clear. The difference usually comes down to internal factors.

The Root Causes: Why Your Dog Keeps Getting Skin Infections

Skin problems are rarely just skin problems. They’re usually the visible expression of internal imbalances. Here are the real culprits:

1. Chronic Inflammation (Often Diet-Driven)

This is the big one, and it’s almost always overlooked.

Inflammation is your dog’s immune response to perceived threats. In small doses, it’s protective. But when inflammation becomes chronic—constant, low-grade, systemic—it creates a cascade of problems, including skin that’s perpetually reactive and prone to infection.

The dietary connection: One of the most common drivers of chronic inflammation in dogs is an imbalanced omega fatty acid ratio. Specifically, too much omega-6 relative to omega-3.

Here’s where it gets relevant for Indian dog parents: chicken is extremely high in omega-6 fatty acids. If your dog’s diet is chicken-heavy (as most Indian home-cooked and commercial diets are), they’re likely consuming far more omega-6 than their body can balance.

Omega-6 fatty acids are pro-inflammatory by nature. That’s not inherently bad—inflammation is necessary for healing. But when omega-6 consistently overwhelms omega-3 (which is anti-inflammatory), you get a dog whose system is primed for inflammatory responses. That itchy skin? That recurring hotspot? It’s often inflammation looking for an outlet.

2. Compromised Immune Function

A healthy immune system keeps opportunistic bacteria and fungi in check. When immunity is compromised—through stress, poor nutrition, underlying illness, or chronic inflammation itself—these organisms gain ground.

This explains why fungal infections often become cyclical. The infection depletes immune resources. Treatment clears the visible symptoms. But the underlying immune weakness remains, and the next trigger brings it all back.

3. Environmental Factors (The Indian Climate Challenge)

India’s hot, humid climate is a perfect storm for skin issues. Moisture gets trapped in fur and skin folds. Bacteria and fungi thrive in warmth. Monsoon season is particularly brutal.

Environmental triggers include:

• High humidity that doesn’t allow skin to dry properly
• Poor ventilation in living spaces
• Wet fur that isn’t dried thoroughly after bathing or rain
• Allergens like dust mites and mould spores (both thrive in humid conditions)
• Contact with contaminated surfaces or soil

4. Allergies (Food and Environmental)

Allergies trigger histamine release, which causes itching. Itching leads to scratching. Scratching damages the skin barrier. Damaged skin gets infected. It’s a predictable cascade.

Food allergies in dogs most commonly involve proteins—chicken, beef, dairy, eggs. Environmental allergies include dust mites, pollen, mould, and even certain grasses. Many dogs deal with both simultaneously.

5. Poor Skin Barrier Function

Healthy skin is your dog’s first line of defence. When the skin barrier is compromised—through nutritional deficiencies, over-bathing, harsh products, or chronic inflammation—it can’t do its job effectively.

Signs of a weakened skin barrier include dry, flaky skin; excessive shedding; dull coat; and increased susceptibility to infections. The skin literally can’t keep pathogens out.

Breaking the Cycle: A Two-Front Approach

If you want to actually solve recurring skin issues—not just manage them—you need to address both the internal drivers and the external symptoms simultaneously.

Internal: Addressing Inflammation Through Diet

Since omega-6/omega-3 imbalance is often at the root of chronic inflammation, correcting this ratio is foundational.

The omega-6 problem with chicken: Chicken has an omega-6 to omega-3 ratio of roughly 10:1 to 20:1. For context, the ideal ratio for reducing inflammation is closer to 4:1 or lower. A chicken-heavy diet tips the scales dramatically toward pro-inflammatory.

Solutions:

• Diversify protein sources: Rotate between chicken, fish (naturally high in omega-3), mutton, and other proteins rather than relying solely on chicken.
• Add omega-3 supplementation: If chicken remains a dietary staple, actively supplement with omega-3 sources to restore balance. hemp seed oil is particularly effective here—it has a naturally balanced omega profile (roughly 3:1 omega-6 to omega-3) and contains GLA (gamma-linolenic acid), which despite being an omega-6, actually has anti-inflammatory properties. Adding hemp seed oil to a chicken-based diet helps counteract the inflammatory load.
• Include fatty fish: Sardines, mackerel, and other small fatty fish are omega-3 powerhouses and most dogs love them.
• Reduce processed foods: Many commercial dog foods use chicken meal and vegetable oils (high in omega-6) as primary ingredients, compounding the imbalance.

External: Supporting Skin Barrier Function

While you work on the internal factors, supporting the skin from outside helps break the infection cycle and provides immediate relief.

What to look for in topical care:

• Natural antimicrobial properties: To keep bacterial and fungal populations in check without harsh chemicals that further irritate compromised skin.
• Deep moisturisation: Dry, cracked skin is vulnerable skin. Quality oils that penetrate rather than just coat are essential.
• Skin barrier repair: Ingredients that actively support skin barrier function, not just mask symptoms.
• Non-irritating formulation: Compromised skin reacts badly to synthetic fragrances, harsh preservatives, and chemical additives.

baobab oil for hot spots oil is one of the most effective options I’ve come across for canine skin issues. It’s naturally rich in vitamins A, D, E, and F (essential fatty acids), absorbs quickly without leaving greasy residue, and has demonstrated antimicrobial and anti-inflammatory properties. For dogs dealing with hotspots, fungal issues, or generally compromised skin, it addresses multiple problems simultaneously—soothing irritation, supporting barrier repair, and creating an environment less hospitable to pathogens. It’s also gentle enough for regular preventive use, not just crisis management.

Environmental Management: Practical Steps

You can’t control the Indian climate, but you can control your dog’s immediate environment:

• Dry thoroughly after baths and rain exposure. Trapped moisture is the enemy. Pay special attention to ears, paws, and skin folds.
• Ensure good ventilation in sleeping areas. Stagnant, humid air encourages fungal growth.
• Wash bedding regularly. Fungal spores and bacteria accumulate in fabric.
• Don’t over-bathe. Excessive bathing strips natural oils and disrupts skin pH. Once every 2-4 weeks is usually sufficient unless there’s a specific issue.
• Consider a summer trim for heavy-coated breeds. Better air circulation to the skin can make a significant difference.

When to See a Vet

While addressing root causes is essential, some situations require professional intervention:

• Hotspots that are spreading rapidly or extremely painful
• Signs of systemic illness (lethargy, loss of appetite, fever)
• Infections that don’t respond to treatment within 5-7 days
• Deep wounds or significant hair loss
• Suspected ringworm (which can spread to humans)

A vet can provide diagnostic clarity, rule out underlying conditions, and prescribe medications when necessary. The goal isn’t to avoid veterinary care—it’s to address the root causes so those visits become rare rather than routine.

The Bottom Line

Hotspots and fungal infections aren’t random bad luck. They’re signals—usually pointing to chronic inflammation, immune compromise, or environmental factors that haven’t been addressed.

The cycle breaks when you stop chasing symptoms and start addressing causes:

• Balance the omega fatty acid ratio in your dog’s diet (especially if chicken-heavy)
• Support skin barrier function with appropriate topical care
• Manage environmental factors within your control
• Give the immune system what it needs to function properly

Your dog’s skin is a window into their overall health. When it’s constantly inflamed, infected, or irritated, that’s valuable information. Listen to it.

Ready to address skin issues from the inside out?

Explore our Cold-Pressed Hemp Seed Oil for omega balance and anti-inflammatory support.

For topical skin support, try our Baobab Dog Hair Oil—India’s first baobab oil formulated specifically for dogs.

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About the Author: Mahiv is a certified canine nutritionist and founder of The Doggos, India’s premium natural pet care brand. His approach focuses on addressing root causes rather than symptoms, with particular attention to the unique challenges faced by Indian dog parents.