Quick Reference

1. Root Cause Database (20 conditions)

Sortable by urgency, weight-loss severity, and itch severity.

# Condition Category Weight Loss Severity Itch Severity Key Additional Signs Urgency Vet Diagnosis Method
1 Food Allergy Allergy Mild–Moderate Moderate–High Diarrhea, ear infections, paw licking Moderate Elimination diet trial
2 Environmental Allergy (Atopy) Allergy Mild Moderate–High Seasonal pattern, face rubbing Moderate Skin/blood allergy test
3 Flea Allergy Dermatitis Allergy/Parasite Mild High Tail-base itching, flea dirt Moderate Physical exam
4 Hookworms Intestinal Parasite Moderate–High Mild–Moderate Diarrhea, pale gums, black stool High Fecal exam
5 Roundworms Intestinal Parasite Moderate Mild Pot-bellied appearance, vomiting High Fecal exam
6 Whipworms Intestinal Parasite Moderate Mild Chronic diarrhea, weight loss High Fecal exam (repeat testing)
7 Giardia Intestinal Parasite Moderate Low Greasy diarrhea, gas Moderate–High Fecal antigen test
8 Hypothyroidism Hormonal Variable (can gain OR lose) Moderate Lethargy, dry coat, cold intolerance Moderate Blood panel (T4/TSH)
9 Exocrine Pancreatic Insufficiency (EPI) Digestive/Enzyme High Moderate Large greasy stools, ravenous appetite High TLI blood test
10 Chronic Bacterial Pyoderma Skin Infection Mild High Pustules, odor, crusting Moderate–High Skin cytology
11 Yeast (Malassezia) Dermatitis Skin Infection Mild High Greasy skin, musty odor Moderate Skin cytology
12 Sarcoptic Mange (Scabies) Parasite/Mite Mild–Moderate Severe Intense itching, crusted ears High Skin scrape
13 Demodectic Mange Parasite/Mite Mild Low–Moderate Patchy hair loss, not very itchy Moderate Skin scrape
14 Ringworm (Dermatophytosis) Fungal Mild Low–Moderate Circular bald patches, scaly rings Moderate Fungal culture/Wood's lamp
15 Diabetes Mellitus Metabolic High Low Excess thirst/urination, cloudy eyes High Blood glucose test
16 Cushing's Disease Hormonal Variable Low–Moderate Pot belly, thin skin, hair loss Moderate–High ACTH stim test
17 Inflammatory Bowel Disease (IBD) Digestive Moderate–High Low Chronic vomiting/diarrhea High Biopsy/endoscopy
18 Kidney Disease Organ Moderate–High Low Excess thirst, poor appetite High Blood/urine panel
19 Cancer (various types) Systemic High Variable Lumps, lethargy, appetite loss High Imaging/biopsy
20 Zinc-Responsive Dermatosis Nutritional Mild Moderate Crusty skin on face/paws Low–Moderate Response to supplementation

2. Home Remedy Comparison (Topical + Oral)

Remedy Type Best For Application Avoid If Frequency
Oatmeal Bath Topical General itch relief Soak 10 min Open wounds 1–2x/week
Apple Cider Vinegar Spray Topical Mild yeast overgrowth Spray, don't saturate Broken/irritated skin As needed
Aloe Vera Gel (pure) Topical Cooling, redness Thin layer Products with latex Daily
Coconut Oil (topical) Topical Dry skin, mild irritation Light rub-in Excess use → greasy coat 2–3x/week
Olive Oil (topical) Topical Dry patches Small amount Pancreatitis-prone dogs 2–3x/week
Chlorhexidine Wash Topical Bacterial overgrowth Per label — As directed
Manuka Honey Topical Localized wound support Thin layer on lesion Large/deep wounds As needed
Hydrocortisone 1% Cream Topical/OTC Small inflamed spots Small area only Prolonged unsupervised use Short-term
Fish Oil (Omega-3) Oral Inflammation reduction Per body weight dosing — Daily
Coconut Oil (oral) Oral Coat/skin support Small amounts Overuse → GI upset Daily, moderate
Probiotics Oral Gut-skin axis support Per product label — Daily
Quercetin Oral Natural antihistamine effect Vet-guided dosing — As directed

3. Homemade Anti-Itch Spray Recipes

Recipe Ingredients Best For Avoid If Shelf Life
ACV + Water 50% water, 50% apple cider vinegar Mild yeast-related itch Broken/bleeding skin 1–2 weeks
Chamomile + Lavender Cooled chamomile tea, trace diluted lavender oil Mild inflammation, stress-licking Essential oil sensitivity 1 week
Aloe + Green Tea Pure aloe gel, brewed green tea Red, inflamed skin Aloe allergy 5–7 days

4. Diet & Food Comparison for Itchy Skin + Weight Loss

Food/Diet Type Benefit for Skin Suitable for Weight-Loss Cases Common Proteins Used Notes
Novel Protein Diet Reduces allergen exposure Yes Venison, duck, rabbit, kangaroo Best for elimination trials
Hydrolyzed Protein Diet Minimizes allergic reaction Yes Broken-down chicken/soy proteins Often vet-prescribed
Salmon-Based Diet High omega-3 content Yes Salmon Supports skin barrier
Limited Ingredient Diet (LID) Simplifies trigger detection Yes Varies (single protein/carb) Good diagnostic starting point
Probiotic-Supplemented Diet Gut-skin axis support Yes N/A Complements other diets
Chicken-Based (standard) Neutral–Negative if allergic Conditional Chicken Common allergen — avoid if reactive
Beef-Based (standard) Neutral–Negative if allergic Conditional Beef Common allergen — avoid if reactive
Grain-Inclusive (wheat/corn) Neutral–Negative if sensitive Conditional Wheat, corn Some dogs react to grains
Soy-Containing Negative if allergic Conditional Soy Common allergen
Dairy-Containing Negative if intolerant Conditional Dairy Common allergen

Foods commonly linked to reactions: Chicken, Beef, Wheat, Corn, Soy, Dairy

5. Nutritional Deficiency → Hair Loss Reference

Deficiency Skin/Coat Effect Supportive Fix
Zinc Crusty, thickened skin patches Zinc-responsive dermatosis diets/supplements
Biotin Dull coat, brittle hair Biotin supplementation
Omega-3 Dry, flaky, inflamed skin Fish oil, flaxseed
Poor Protein Intake Weak coat, slow healing High-quality protein diet

6. Red Flags Checklist — When to Stop Home Care and See a Vet