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AOD-9604 Peptide: What It Is, How It Works, and What to Expect
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Medically Reviewed by
Dr. Paul Hanna, DO, RPVI
Board Certified Vascular Surgeon
Visible veins on your legs are not just a cosmetic concern, they can be early warning signs of underlying venous disease that gets worse without treatment. Millions of Americans notice blue, green, or bulging veins on their legs each year, and many are unsure whether what they are seeing is reticular veins, varicose veins, or spider veins. Understanding the difference matters because each type carries a different level of medical risk and requires a different approach to treatment.
At South Florida Multispecialty Medical Group, our vascular surgery team treats all stages of venous disease from mild cosmetic concerns to advanced vascular conditions, right here in Miami.
Reticular veins, sometimes called “feeder veins,” are small to medium-sized veins that typically measure between 1 and 3 millimeters in diameter. They sit just beneath the skin’s surface and appear as flat, bluish-green or purple networks that fan out across the legs, thighs, or the back of the knees. Unlike varicose veins, reticular veins don’t bulge or protrude above the skin, they remain flat.
The reason they’re called “feeder veins” is clinically significant. Reticular veins often supply blood to spider veins, the tiny red or purple capillaries visible at the skin’s surface. When a vascular specialist treats spider veins without addressing the underlying reticular veins, spider veins tend to recur. That’s why a thorough vascular evaluation that identifies feeder veins is critical to long-term treatment success.
Reticular veins develop because the small valves inside these vessels weaken or fail. Instead of directing blood efficiently upward toward the heart, faulty valves allow blood to pool. Over time, this pooling stretches the vein wall and creates the characteristic blue-green pattern visible through the skin.
Varicose veins are enlarged, twisted, rope-like veins that bulge visibly above the skin’s surface. They are typically 3 millimeters or larger in diameter and most commonly appear on the calves and inner thighs. Their gnarled, bluish-purple appearance is unmistakable and is the result of significant venous insufficiency, a condition where damaged valves cause blood to flow backward and pool inside the vein.
Unlike reticular veins, varicose veins are not just cosmetic. They represent a more advanced stage of venous disease and are associated with real symptoms that impact quality of life. Patients frequently describe legs that feel heavy, achy, or tired, particularly after standing for extended periods. Without treatment, varicose veins can progress to serious complications including chronic venous insufficiency, skin changes, and venous leg ulcers.
In Miami’s warm climate, where shorts and active outdoor lifestyles are the norm year-round, varicose veins are a common concern. Our vascular surgery team at SFL Medical Group evaluates and treats varicose veins using the most current minimally invasive techniques available.
Many patients come to us confused about what type of vein they have. Here’s a clear breakdown of how these three conditions differ:
Spider veins are the smallest, typically less than 1 millimeter and appear as red, blue, or purple clusters that resemble a spider’s web or tree branches. They are flat and purely cosmetic in most cases.
Reticular veins fall in the middle, ranging from 1 to 3 millimeters. They are flat, blue-green, and often serve as the feeding source for spider veins.
Varicose veins are the largest, measuring 3 millimeters or more. They bulge above the skin surface and look twisted, cord-like, and blue or purple.
Spider veins rarely cause symptoms beyond their appearance. Reticular veins may cause mild aching or discomfort, especially after prolonged standing. Varicose veins frequently cause significant symptoms, leg heaviness, throbbing, swelling, itching, and cramping. Left untreated, varicose veins carry risks including deep vein thrombosis (DVT), skin discoloration, and open wounds known as venous leg ulcers.
If you’ve noticed any of these on your legs, exploring our Vascular Surgery services in Miami is a smart first step.
Both conditions share a root cause: venous insufficiency. But several factors accelerate how quickly and severely veins deteriorate.
Family history is one of the strongest predictors of vein disease. If both parents have varicose veins, research suggests you carry up to a 90% lifetime risk of developing them yourself. Genetics influence the strength of vein walls, the competency of venous valves, and overall vascular health.
Hormones play a powerful role in venous health. Progesterone relaxes vein walls, making them more prone to dilation and valve failure. During pregnancy, blood volume increases by roughly 50%, placing enormous additional pressure on leg veins. Many women first notice reticular veins or varicose veins during or after pregnancy and while some improve postpartum, many persist and require treatment.
Vein walls and valves naturally weaken with age. Professions that require long hours on your feet, nursing, teaching, retail, significantly raise risk by increasing venous pressure in the legs. Conversely, prolonged sitting (as with desk jobs or long-haul travel) reduces the natural muscle-pump action that helps push blood upward, contributing to blood pooling.
Excess body weight increases abdominal pressure, which competes against blood trying to travel up from the legs. Obesity is a well-established risk factor for both reticular and varicose veins. Sedentary habits compound the issue, while regular physical activity particularly walking and cycling helps strengthen calf muscle function and supports healthy venous return.
Knowing when to see a vascular specialist is important. Don’t dismiss visible leg veins as purely cosmetic. Seek a professional evaluation if you experience any of the following:
The last two points are especially important. Skin discoloration, hardening, and non-healing wounds near the ankle are signs of advanced chronic venous insufficiency and require urgent vascular evaluation. Our blog on what causes varicose veins and treatment options covers the progression of venous disease in more detail.
At SFL Medical Group, our vascular team begins with a thorough clinical evaluation followed by a venous duplex ultrasound, the gold standard for diagnosing venous insufficiency. This non-invasive imaging study maps the venous system of your legs, identifies which valves are failing, and reveals the extent of reflux (backward blood flow) present.
Imaging is essential because what’s visible on the skin surface doesn’t always reflect what’s happening deeper inside. A vein that looks minor externally may have significant insufficiency driving it from within. We also offer advanced vascular imaging when needed, and our blog post on vascular imaging in Miami: ultrasound, CTA, and MRA explains the different diagnostic modalities our team uses.
The good news is that modern vein treatment is minimally invasive, highly effective, and performed in-office with minimal downtime. The right treatment depends on the size, location, and severity of the veins involved.
Sclerotherapy is the preferred treatment for both reticular veins and spider veins. A vascular specialist injects a specialized chemical solution directly into the affected vein, causing it to collapse, scar, and eventually be reabsorbed by the body. Blood reroutes through healthier veins.
For reticular veins, foam sclerotherapy (where the sclerosant is mixed with air to form a foam) is particularly effective because it fills the vein more completely and requires less solution. Most patients need one to three sessions, spaced several weeks apart, to achieve optimal results.
Our team performs sclerotherapy as part of our comprehensive sclerotherapy service at our Miami clinic.
Surface laser treatment works well for very fine spider veins and small reticular veins that are difficult to inject. Laser energy is delivered through the skin, targeting the pigment in blood and causing the vein to close. It is needle-free and well-tolerated, though multiple sessions may be needed.
For larger varicose veins, endovenous laser ablation (EVLA) is a more advanced option. A thin fiber is inserted into the diseased vein under ultrasound guidance, and laser energy is delivered from the inside to seal the vein shut. This technique is highly effective and replaces the need for traditional surgical vein stripping in most patients.
Patients can also review our dedicated page on vein ablation therapy for more details on this procedure.
Beyond laser, radiofrequency ablation (RFA) uses controlled heat delivered via a catheter to close off large, incompetent saphenous veins, the primary trunk veins that feed varicosities. RFA has excellent clinical outcomes and allows patients to walk immediately after the procedure with minimal discomfort.
In cases where varicose veins are very large, complex, or associated with significant complications, surgical intervention may be necessary. Ambulatory phlebectomy involves removing veins through tiny puncture incisions under local anesthesia. It is appropriate for bulging surface veins that are too large for sclerotherapy but don’t require full open surgery.
For patients with associated arterial disease or more complex vascular conditions, procedures such as angiogram and angioplasty may form part of a broader treatment plan. Our angiogram, angioplasty, and stenting service provides comprehensive endovascular care for more advanced vascular disease.
Compression stockings are not a cure, but they are a valuable adjunct to treatment. Medical-grade compression (20 to 30 mmHg or higher) helps counteract venous pressure, reduce swelling, and slow disease progression. Most insurance plans require documented compression stocking use before approving ablation procedures. According to the Centers for Disease Control and Prevention (CDC), compression therapy also plays a preventive role in reducing the risk of deep vein thrombosis (DVT) in at-risk individuals.
Varicose veins are clinically more serious. They represent a more advanced stage of venous insufficiency and carry a higher risk of complications including:
Reticular veins are not typically dangerous on their own, but they should not be ignored. As feeder vessels for spider veins, they perpetuate cosmetic recurrence if left untreated. And for some patients, they represent an early stage of a venous system that is heading toward more significant disease.
If you notice visible veins accompanied by any of the symptoms listed above, we strongly encourage a formal evaluation. Our blog on legs that feel heavy discusses one of the most common early symptoms of venous insufficiency that patients often dismiss for years before seeking care.
Miami’s subtropical climate presents unique challenges for vein disease patients. Heat causes blood vessels to dilate, which can worsen symptoms and accelerate progression. Patients often report that their legs feel worse during summer months, a pattern entirely consistent with how heat affects venous tone and fluid distribution.
Staying well-hydrated, wearing sun-protective compression garments, and avoiding prolonged heat exposure (hot baths, saunas, direct sun on the legs) are practical steps Miami residents can take to manage symptoms between treatment visits.
The good news is that our clinic is conveniently located to serve patients across Miami-Dade County, and our vascular team has extensive experience managing vein disease in this climate. We understand what patients in South Florida face, and we tailor our treatment protocols accordingly. If you are also experiencing related concerns such as swollen ankles or peripheral arterial disease, our multispecialty team is equipped to evaluate and treat these conditions as well.
At South Florida Multispecialty Medical Group, we take a comprehensive, patient-centered approach to vein disease. Our vascular surgery team, led by board-certified specialists, offers the full spectrum of vein treatments from conservative management to advanced endovascular procedures.
What sets us apart is our multispecialty structure. Vein disease doesn’t exist in isolation. Many patients with venous insufficiency also have related conditions, joint pain, skin changes, diabetes, or arterial disease that require a coordinated approach across specialties. Our team communicates across departments to ensure you receive integrated care that addresses the full picture of your health.
Our blog post comparing arterial vs venous disease is a great resource if you want to understand how these two types of vascular conditions differ and overlap. Patients dealing with related vascular complications such as limb salvage will also find our dedicated specialty team experienced in advanced interventional care.
We also believe strongly in patient education. Understanding your condition is the first step toward making informed treatment decisions, and our team takes the time to explain findings, options, and expected outcomes clearly and thoroughly.
To learn more about our full vascular surgery offering, visit our Vascular Surgery page.
Dr. Paul Hanna is a board-certified vascular surgeon with specialized fellowship training in complex vascular interventions and minimally invasive endovascular techniques. He serves as Director of Vascular Surgery and General Surgery at South Florida Multispecialty Medical Group, with over a decade of experience treating vascular conditions affecting the limbs, aorta, and peripheral arterial system.
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