If your Achilles tendon hurts, the first thing to do is figure out whether you’re dealing with a gradual overuse injury or something more serious like a tear. Most Achilles pain is tendinopathy, a repetitive strain condition that responds well to self-care and targeted exercises. But a sudden pop, sharp pain, or inability to push off your foot needs medical attention right away.
Rule Out a Tear First
A full Achilles rupture feels different from the dull ache of overuse. It usually comes with a sudden, sharp pain in the back of your lower leg, sometimes described as feeling like you got kicked. You may hear or feel a pop. Walking becomes difficult, especially pushing off the ground, and the calf often swells and bruises. In many cases, you can feel a gap or indentation in the tendon about one to three inches above the heel bone.
If any of that sounds familiar, get to a doctor. A simple clinical test, where a provider squeezes your calf while you lie face down, is 96% sensitive and 93% specific for detecting a complete tear. If the foot doesn’t flex downward when squeezed, the tendon is likely torn and you’ll need imaging and possibly surgery.
Where It Hurts Matters
Achilles tendinopathy shows up in two distinct zones, and the location changes how you treat it. Midportion tendinopathy causes pain in the middle of the tendon, roughly one to three inches above the heel. Insertional tendinopathy causes pain right where the tendon attaches to the heel bone, within about an inch of the insertion point. Insertional cases are more likely to involve calcium deposits within the tendon (about 94% of insertional cases versus 56% of midportion cases), which can make them more stubborn to treat.
Both types cause similar levels of pain and functional limitation, but the distinction matters because certain exercises that work well for midportion pain can actually aggravate insertional pain if done incorrectly. More on that below.
Immediate Steps to Reduce Pain
Most Achilles tendinopathy does well with self-care. In the first few days of a flare-up, your priorities are reducing load on the tendon and managing inflammation.
- Cut back on the activity that triggered it. You don’t need complete rest, but reduce running, jumping, or hill walking until the sharp pain settles. Gentle walking on flat surfaces is usually fine.
- Ice the area. Apply ice for 15 to 20 minutes several times a day, especially after activity.
- Use over-the-counter pain relief if needed. Ibuprofen or naproxen can help with pain and swelling in the short term.
- Elevate your heel slightly. A heel lift inside your shoe reduces the stretch on the tendon and can make walking noticeably more comfortable. Even a one- to two-inch elevation decreases the angle at which the tendon is loaded.
The Exercise That Treats Achilles Tendinopathy
Once the initial sharp pain calms down (usually within a few days to a week), the most effective treatment is a specific type of strengthening exercise called an eccentric heel drop. This is the gold standard for Achilles rehab, and it works by gradually loading and remodeling the damaged tendon tissue. It’s not a stretch. It’s a slow, controlled lowering exercise.
Here’s how it works: stand on the edge of a step with the balls of your feet on the step and your heels hanging off. Rise up onto your toes using both legs, then slowly lower yourself down using only the injured leg. The “lowering” part is the eccentric load that stimulates tendon healing. Do this with your knee straight and then again with your knee slightly bent (about 45 degrees) to target different parts of the tendon and calf.
The standard protocol calls for 3 sets of 15 repetitions, performed twice daily, seven days a week, for 12 weeks. That’s a real commitment, and the first few weeks often feel uncomfortable. Some mild discomfort during the exercise is expected and acceptable. Sharp or worsening pain is not. If you have insertional tendinopathy (pain right at the heel bone), avoid dropping your heel below the level of the step. Instead, perform the exercise on flat ground so the tendon doesn’t get compressed at its attachment point.
Footwear Changes That Help
What you wear on your feet plays a bigger role than most people realize. Flat shoes, flip-flops, and minimalist footwear increase the stretch on the Achilles with every step. During recovery, choose shoes with a moderate heel-to-toe drop that keeps your heel slightly elevated. This reduces tension on the tendon throughout the day, not just during exercise.
Heel lifts or raised insoles are an inexpensive option if you don’t want to replace your shoes. Slip them into your everyday footwear to ease the load. Look for shoes with good cushioning and a firm heel counter (the rigid part that cups the back of your heel) so the shoe doesn’t collapse under your foot.
Risk Factors Worth Knowing About
Achilles problems aren’t always caused by exercise. Certain medications and health conditions weaken tendons and raise your risk significantly. A class of antibiotics called fluoroquinolones (commonly prescribed for urinary tract and respiratory infections) is strongly linked to Achilles tendinopathy and even rupture. The damage typically develops within the first 30 days of starting the medication and is often painful and long-lasting. The risk is highest if you’re over 60, take corticosteroids at the same time, have kidney problems, or have had an organ transplant.
Diabetes, obesity, and immune system conditions also increase susceptibility to tendon problems. If your Achilles pain appeared without a clear increase in physical activity, these underlying factors are worth discussing with your doctor.
When Self-Care Isn’t Enough
Most people see meaningful improvement within 6 to 12 weeks of consistent eccentric exercises and load management. If your pain hasn’t budged after three months of dedicated rehab, it’s time to explore other options with a sports medicine doctor or physical therapist.
Shockwave therapy is one option you may hear about. It uses pressure waves to stimulate blood flow and tissue remodeling. However, current evidence shows it offers only a small, inconclusive benefit over eccentric exercises alone for Achilles tendinopathy. It’s not clearly superior to the exercise-based approach, so it’s typically reserved for cases that haven’t responded to a full course of rehab rather than used as a first-line treatment.
Other options for persistent cases include physical therapy with guided loading progressions, custom orthotics, and in rare cases, surgical intervention. Surgery is generally a last resort after at least six months of conservative treatment has failed. The vast majority of Achilles tendinopathy cases resolve without it.
Returning to Activity Safely
The biggest mistake people make with Achilles pain is returning to full activity too quickly after the pain decreases. Pain often improves before the tendon has fully adapted to load, which sets you up for a cycle of flare-ups. Increase your activity by no more than about 10% per week. If you’re a runner, start with walk-run intervals on flat terrain before adding speed or hills. Avoid sudden spikes in training volume, and keep doing your eccentric exercises as maintenance even after symptoms resolve.
Your Achilles tendon is the strongest tendon in your body, but it adapts slowly. Tendons remodel over weeks and months, not days. Patience with the rehab process is genuinely the fastest path back to full activity.