HAIR LOSS / COAT CHANGES (ENDOCRINE-RELATED)
WHAT THIS SYMPTOM USUALLY MEANS
Endocrine disorders often cause slow, symmetric hair loss, thinning coat, or “rat tail” appearance. The skin may appear dry, flaky, or prone to infections.
MOST COMMON CAUSES
MILD
• Seasonal shedding
• Allergies
• Fleas
• Stress
• Dietary imbalance
MEDICAL
• Hypothyroidism
• Cushing’s disease
• Diabetes-related skin infections
• Hyperthyroidism (cats—rare)
• Hormone imbalance after spay/neuter
• Chronic dermatitis
EMERGENCY
• Sudden hair loss with pain
• Rapid skin color changes
• Severe infection
• Toxic exposure
RED FLAGS
• Blackened skin
• Persistent infections
• Hair loss on both sides symmetrically
• Increased thirst + hair loss
• If you’re unsure, treat it as urgent.
AT-HOME CARE
• Omega-3s
• Hypoallergenic shampoo
• Flea control
These do not replace a vet diagnosis.
WHAT A VETERINARIAN WILL CHECK
• Thyroid panel
• Cortisol testing
• Skin cytology
• Bloodwork
• Urinalysis
• Dermatology exam
MOST LIKELY DIAGNOSES
• Hypothyroidism
• Cushing’s
• Allergies
• Skin infection
• Hormonal alopecia
RISK GROUPS
• Middle-aged dogs
• Pomeranians, Huskies (alopecia X)
• Labs, Goldens (hypothyroid)
WHEN TO SCHEDULE
• 48 hrs: persistent hair loss
• Today: painful or infected skin
LONGEVITY IMPACT
Endocrine-driven skin changes are early signs of metabolic aging.
LONGEVITY CONSULT
Perfect for mapping endocrine balance and inflammation levels.
FAQ
Is hair loss itchy?
Endocrine hair loss usually is not.
Can thyroid issues cause skin changes?
Yes.
Can stress alone do this?
Yes, but rule out disease.