Dog Hot Spots and Not Eating: What Should You Do?
A dog that has developed hot spots and is also refusing food may have two unrelated issues — or a single underlying condition that is affecting both the skin and the appetite. Recognizing when the combination warrants a closer look can help owners act at the right time.
Quick Answer
Hot spots (acute moist dermatitis) combined with reduced or absent appetite may occur when a dog is in pain, has a systemic infection, is experiencing a food allergy affecting both skin and gut, or has an unrelated concurrent illness. Because a loss of appetite can quickly affect hydration and energy, especially in small or young dogs, a veterinary visit is advisable when food refusal lasts more than 24 hours or is accompanied by other signs.
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What Can This Combination Look Like?
Hot Spots on the Skin
Hot spots typically appear as red, inflamed, and moist patches of skin with hair loss and sometimes oozing or crusting. The lesions are often itchy and painful, prompting the dog to lick, chew, or scratch.
Reduced or Absent Appetite
A dog may show decreased interest in food in several ways:
- Refusing normal meals entirely.
- Eating less than usual or showing hesitation.
- Eating only treats or specific palatable foods.
- Showing interest in food but walking away.
Assessing the Appetite Change
It is helpful to differentiate between a mild reduction in appetite and a complete refusal to eat. A one-day reduction may be related to stress, mild gastrointestinal upset, or discomfort, while persistent refusal over 24-48 hours warrants veterinary attention, especially if other signs are present.
What May Be Associated With Hot Spots and Not Eating?
Several causes may link hot spots to a loss of appetite.
Pain from Hot Spots
Hot spots can be quite painful, especially when large, deep, or located in areas that are aggravated by movement. Dogs in pain often eat less. If your dog seems hesitant to lie down, is reluctant to move, or reacts when the affected area is touched, pain may be a contributing factor.
Systemic Infection
When a skin infection becomes significant, the dog's immune system mounts a response that can include fever and reduced appetite. The body may prioritize fighting infection over digestion. If hot spots are accompanied by lethargy, warmth around the lesions, or a swollen appearance, systemic involvement is possible.
Food Allergies Affecting Skin and Gastrointestinal Tract
Food allergies can affect multiple body systems. A dog with a food sensitivity may develop chronic or recurrent hot spots as well as gastrointestinal discomfort, including nausea, vomiting, or reduced appetite. Common food allergens in dogs include specific proteins (beef, dairy, chicken, wheat).
Concurrent Unrelated Illness
It is entirely possible that a dog has hot spots for one reason (such as a flea allergy or moisture) and is not eating for another (such as a gastrointestinal infection, dental pain, or stress). Each sign should be evaluated both independently and as part of the overall picture.
Medication Side Effects
If your dog is being treated for hot spots with antibiotics, corticosteroids, or other medications, gastrointestinal side effects can reduce appetite. Antibiotics can disrupt the gut microbiome, and corticosteroids may alter appetite in either direction — sometimes increasing it, sometimes decreasing it.
Stress or Anxiety
Some dogs develop hot spots as a result of stress-induced licking. The same stress (such as a change in household, travel, or a new pet) can also reduce appetite. In these cases, the underlying stressor is the shared cause.
What Should the Pet Owner Monitor?
Appetite and Eating Patterns
- Track how much the dog is eating at each meal.
- Note whether the dog shows interest but cannot eat (which may suggest oral pain) versus no interest at all.
- Observe whether treats or different foods are accepted.
Hydration Status
A dog that is not eating may also drink less. Monitor:
- Whether the dog is drinking water.
- Gum moisture (dry or tacky gums may indicate dehydration).
- Skin elasticity (gently pinch the skin between the shoulder blades; if it does not snap back quickly, dehydration may be present).
Hot Spot Progression
- Note whether the lesions are improving, stable, or worsening.
- Observe whether the dog is still licking or chewing despite reduced appetite.
Additional Signs
- Vomiting or diarrhea.
- Lethargy or weakness.
- Fever (rectal temperature above 102.5 degrees Fahrenheit / 39.2 degrees Celsius).
- Changes in urination.
What Can the Owner Safely Do Next?
Encourage Eating
- Offer a bland, palatable diet: Boiled plain chicken breast and white rice, or a small amount of plain low-sodium broth added to kibble, may tempt a picky eater.
- Warm the food slightly: Warming can enhance aroma and palatability.
- Hand-feed in small portions: Sometimes interaction encourages eating.
Manage the Hot Spots
- Prevent self-trauma: Use an Elizabethan collar or soft cone to stop licking and chewing.
- Keep lesions clean and dry: Gently clean with a veterinarian-approved antiseptic.
Monitor Hydration
Ensure fresh water is available at all times. If the dog is not drinking, offer small amounts of water frequently or try ice cubes as an alternative.
Avoid Tempting but Risky Foods
Do not offer fatty table scraps, seasoned meats, onions, garlic, grapes, raisins, chocolate, or xylitol-containing products, as these can be harmful to dogs.
When to Contact a Veterinarian
Seek Emergency or Same-Day Care If:
- The dog has not eaten for more than 24-48 hours (or sooner for puppies, small breeds, or dogs with diabetes or other chronic conditions).
- The dog is also not drinking water or is vomiting water back up.
- The dog is lethargic, weak, or unresponsive.
- Hot spots are spreading rapidly, have a foul odor, or are oozing pus.
- There are signs of pain, fever, or dehydration.
Schedule a Non-Urgent Visit If:
- The dog is eating less than usual but still consuming some food and water.
- Hot spots are stable and not worsening.
- The dog is bright and alert otherwise.
- The appetite change has lasted less than 24 hours without other signs.
Frequently Asked Questions
How long can a dog go without eating before it becomes dangerous?
Most healthy adult dogs can go 24-48 hours without food without serious harm, but any refusal to eat beyond 24 hours — especially with other signs — warrants a veterinary visit. Puppies, small breeds, and dogs with diabetes or other medical conditions can develop complications much sooner and should be seen promptly.
Could my dog be refusing food because the hot spots hurt?
Yes. Pain from hot spots, particularly when lesions are located around the mouth, neck, or ears, can make eating uncomfortable. Even hot spots elsewhere can cause enough generalized discomfort to reduce appetite. Managing the pain and treating the hot spots may help restore normal eating.
Is it normal for a dog with hot spots to lose their appetite?
Mild appetite reduction can occur when a dog is uncomfortable or has a mild systemic response to skin inflammation. However, complete refusal to eat is not typical of uncomplicated hot spots alone and should prompt a veterinary evaluation for other possible causes.
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Disclaimer
"This article and the PawAI Symptom Triage tool provide general information and cannot diagnose conditions or replace examination, diagnosis, or treatment by a licensed veterinarian. If you are concerned about your pet's health, contact a veterinarian promptly."
SYMPTOM TRIAGE
A dog with hot spots who is refusing food may be in pain or have an underlying illness. Use our symptom checker to decide whether your dog should see a veterinarian soon.
This tool does not diagnose conditions or replace a veterinarian.