Most sores heal on their own within one to three weeks, but the right care can cut that timeline shorter and reduce pain along the way. The best approach depends entirely on what kind of sore you’re dealing with, where it is on your body, and what’s causing it. Here’s how to treat the most common types effectively.
Mouth Sores (Canker Sores)
Canker sores are small, shallow ulcers inside the mouth, usually on the inner cheeks, gums, or tongue. They’re not contagious and typically heal within one to two weeks without treatment. But they can be painful enough to make eating and talking miserable, so speeding up the process is worth the effort.
A saltwater rinse is the simplest and most effective home remedy. Mix one teaspoon of salt into eight ounces of warm water and swish for 30 seconds, then spit. If that stings too much, use half a teaspoon of salt for the first day or two. You can rinse several times a day, especially after meals, to keep the area clean and reduce bacteria.
Over-the-counter products designed for mouth sores come as pastes, gels, or rinses. Look for products containing benzocaine, which numbs the area, or hydrogen peroxide rinses that work as antiseptics. Apply these as soon as a sore appears for the best results. For sores that are unusually large or persistent, a doctor can prescribe a steroid rinse to bring down inflammation or a topical treatment that chemically cauterizes the sore and can reduce healing time to about a week.
While the sore heals, avoid acidic foods like citrus and tomatoes, spicy dishes, and rough-textured snacks like chips. These won’t cause lasting damage, but they’ll irritate the sore and slow your recovery.
Cold Sores
Cold sores look like small fluid-filled blisters, usually on or around the lips. They’re caused by the herpes simplex virus, which means they’re contagious and can recur throughout your life. A typical outbreak clears in 7 to 10 days.
Antiviral cream is the go-to treatment. Apply a thin layer to the affected area five times a day, spacing applications about four hours apart. The key is starting as early as possible, ideally when you first feel that tingling or burning sensation before a blister even forms. If the sore hasn’t healed after nine days of using the cream, stop and talk to your doctor. For people who get frequent or severe outbreaks, a doctor may prescribe antiviral pills that work from the inside to shorten flare-ups and reduce their frequency.
Avoid touching, picking, or popping cold sore blisters. This spreads the virus to other parts of your body or to other people. Wash your hands if you do touch the area, and don’t share utensils, lip products, or towels during an outbreak.
Open Skin Sores and Wounds
For minor skin sores, cuts, and abrasions, the goal is simple: keep it clean, keep it moist, and protect it from bacteria. Start by gently washing the wound with soap and water or a saline solution. Skip rubbing alcohol or straight hydrogen peroxide on open skin, as these can actually damage healthy tissue and slow healing.
Hydrocolloid bandages are one of the best options for healing open sores. The outer layer forms a waterproof seal that blocks dirt and bacteria. The inner layer absorbs fluid from the wound and turns it into a soft gel, creating the moist environment that skin needs to regenerate. That gel also prevents the bandage from sticking to the wound, so you won’t rip off new tissue when you change it. Studies have found these dressings support new blood vessel growth, collagen formation, and maintain the right pH and temperature for healing.
If you prefer a standard bandage, apply a thin layer of petroleum jelly or antibiotic ointment before covering the wound. Change the bandage daily or whenever it gets wet or dirty. Wounds gain strength quickly over the first six weeks. By about three months, a healed wound reaches roughly 80% of the skin’s original strength, though it never fully returns to 100%.
Pressure Sores
Pressure sores develop when sustained pressure on the skin, usually over a bony area like the tailbone, heels, or hips, cuts off blood flow and damages tissue. They’re most common in people who spend long periods in a bed or wheelchair. In the earliest stage, the skin looks red or pink but isn’t broken. Caught early, these sores can heal simply by relieving the pressure and keeping the skin clean.
For more advanced pressure sores with open wounds, treatment involves cleaning the area with saline and covering it with specialized dressings like hydrogel, foam, or alginate (seaweed-based) bandages that maintain moisture. Severe sores with dead tissue may require a medical procedure to remove that tissue so healthy skin can regrow underneath. Pressure redistribution is critical throughout the healing process. This might mean repositioning every two hours, using specialized mattresses, or wearing orthotic boots or shoe inserts to take weight off the affected area.
Sores Related to Diabetes
Foot ulcers are a common and serious complication of diabetes. Reduced blood flow and nerve damage in the feet mean sores can develop without being noticed and heal far more slowly than normal. If you have diabetes and develop any sore on your feet, treat it as urgent.
The standard care approach involves three things: keeping the wound moist with appropriate dressings to aid healing and infection control, removing dead tissue so new skin can grow, and offloading pressure from the bottom of the foot. Pressure on the sole is the primary cause of these ulcers, and if it isn’t addressed, the sore won’t heal. Offloading strategies include specialized boots, orthotic walkers, or custom shoe inserts that redistribute your weight away from the wound.
Genital Sores
Sores on or around the genitals, anus, or surrounding skin are often caused by a sexually transmitted infection, most commonly herpes or syphilis. These look different from each other: herpes typically starts as small blisters, while syphilis begins as a firm, painless bump. But self-diagnosis isn’t reliable, and the consequences of untreated STIs are serious.
Getting tested is the essential first step. Testing typically includes blood work for syphilis and herpes antibodies, along with a swab of the sore itself. HIV testing is also standard for anyone presenting with genital ulcers. Treatment depends on the cause, but in many cases, doctors will start antiviral or antibiotic treatment at the first visit based on how the sore looks, before test results come back. Early treatment for both herpes and syphilis is more effective and reduces the chance of spreading the infection to others.
Signs a Sore Is Infected
Any sore can become infected if bacteria get into the wound. Watch for increasing redness that spreads beyond the sore’s edges, swelling, warmth around the area, pus or cloudy drainage, and worsening pain. Red streaks radiating outward from the sore suggest the infection is spreading into surrounding tissue. A fever means the infection may have become systemic. Any of these signs, particularly the streaking or fever, warrant prompt medical attention.
Nutrition That Supports Healing
What you eat matters more than most people realize when it comes to healing sores. Your body needs raw materials to rebuild tissue, and certain nutrients play outsized roles in that process.
Vitamin C is essential for collagen production, the protein that forms the structural framework of new skin. Zinc supports immune function and cell division at the wound site. Protein provides the building blocks for tissue repair. Collagen supplements specifically, at doses of 2.5 to 10 grams per day, have shown positive effects on wound healing, skin elasticity, and hydration in studies lasting 8 to 24 weeks. Probiotics may also help by supporting the immune response in both gut ulcers and infected skin wounds.
A daily multivitamin covering 100% of the recommended value for key vitamins and minerals is a reasonable baseline, especially if your diet is limited. Vitamins A, C, D, E, B complex, and minerals like zinc, selenium, and iron all contribute to skin health. For people dealing with chronic or slow-healing sores, addressing nutritional gaps can make a meaningful difference in recovery time.