🔍 What Are Follicular Cysts?

Follicular cysts are benign nodules or bumps that originate from a dog’s hair follicle. They are typically slow-growing, but can become itchy, inflamed, or even infected as they enlarge. These skin masses often appear as smooth, round swellings that may release a thick white, yellow, or brown substance. 🧪

🧬 Alternative Names

Follicular cysts may be referred to as:

• 🧫 Infundibular cysts (epidermoid cysts, sebaceous cysts)
• 🔬 Isthmus or tricholemmal cysts (isthmus-catagen cysts)
• 🧠 Matrical cysts
• 🌱 Hybrid or panfollicular cysts

🩺 What Do They Look Like?

These cysts can be:

• 👁️ Visible as solitary bumps (rarely multiple)
• 💥 Sometimes painful or itchy
• 🌡️ Oozing thick discharge if ruptured
• 📍 Found anywhere on the body, especially on the trunk or limbs

🔬 How Are They Diagnosed?

Your veterinarian may perform:

• 💉 Fine needle aspirate: A needle collects cells for microscopic review
• 🔪 Surgical biopsy: Recommended for growing, painful, or suspicious lesions

These steps help differentiate follicular cysts from tumors or other types of skin masses. 🧫

💊 Treatment Options

While benign, follicular cysts may require treatment if they become problematic. Options include:

• 🔍 Monitoring: If small and not causing discomfort
• 💊 Antibiotics: If the cyst becomes infected; your vet may perform a culture first
• 🔪 Surgical removal: Recommended for painful, ruptured, or recurring cysts

🛑 Once removed completely, follicular cysts do not grow back.

📋 Quick Reference Table: Follicular Cysts

🧼 Home Monitoring Tips

• 🔍 Check weekly for new or growing lumps
• 📏 Monitor cysts for size, discharge, and irritation
• 🚫 Avoid squeezing or popping them
• 📸 Take photos monthly to track changes
• 👨‍⚕️ Schedule rechecks for any rapid growth, pain, or rupture

🔧 Ask A Vet Can Help

Worried about a new bump or swelling on your dog’s skin? Use the Ask A Vet app to share photos with a vet, get an accurate diagnosis, and decide if removal is needed. 🐾📱

🐾 Final Thoughts from Dr Duncan Houston

Follicular cysts are common and usually harmless—but they can become painful or infected if left untreated. A quick vet check and simple surgery can offer a permanent solution for your pup’s skin comfort. 💙🐶