Summer in San Antonio means pools, sandals, outdoor trails, and bare feet on warm pavement. For your overall health, that freedom is welcome. For your feet, it is one of the riskiest times of year.

Between public pools, shared gym showers, sweaty footwear, and small cuts from outdoor activity, June through August creates near-perfect conditions for bacteria, fungi, and viruses to enter the skin and take hold. A foot infection can start as nothing more than a patch of irritated skin, and escalate into a serious medical problem within days, particularly for patients with diabetes, poor circulation, or an existing foot deformity.

At Podiatry of SA, our licensed, board-certified podiatrists, part of the Hillside Medical Group, treat a significant spike in foot infections every summer season. This guide covers everything you need to know: the types of foot infections we see most often, how to recognize early symptoms, how deformities increase your infection risk, when to stop self-treating, and what a professional evaluation at our clinic looks like.

Why Summer Increases Your Risk of Foot Infections

Foot infections do not occur randomly. They happen when the right conditions allow bacteria, fungi, or viruses to penetrate and grow in the skin or deeper tissues of the foot. Summer stacks several of those conditions at once:

• Heat and moisture: Warm, sweaty feet, whether in closed shoes or still damp from swimming, create an ideal breeding environment for bacteria and fungi. The skin between the toes stays moist and rarely dries fully, making it especially vulnerable.
• Bare feet on shared surfaces: Public pools, gym showers, locker rooms, and changing areas are common transmission points for fungal infections like athlete’s foot and for plantar warts. These surfaces harbor contagious organisms even when they appear clean.
• Minor skin breaks: Summer activities, walking on rough pavement, stubbing a toe on pool stairs, and bursting a blister from a new sandal create small entry points for bacteria that can quickly become infected wounds.
• Increased physical activity: More time on your feet means more friction, pressure, and skin breakdown. Ingrown toenails, cracked calluses, and blisters all become potential sites for bacterial foot infection.
• Existing foot deformities: Bunions, hammertoes, and claw toes create pressure points and areas of abnormal skin contact. When skin breaks down in those spots, infection risk rises sharply, a connection many patients don’t realize exists.
• Delayed treatment: Many people dismiss foot discomfort in summer as general soreness from being more active. An infection that could have been treated easily in its early stage can become significantly worse within 48 to 72 hours if it is left unaddressed.

Types of Foot Infections: What They Look Like and How They Differ

Knowing which type of foot infection you are dealing with matters clinically. Treating a fungal infection with antibiotics will not work. Treating a bacterial infection with over-the-counter antifungal cream can allow it to spread. Below is a breakdown of the most common types of foot infections we see at Podiatry of SA each summer.

Bacterial Foot Infections

Bacteria enter the foot through broken skin, cuts, scratches, blisters, cracked heels, or skin tears near the toenails. The most common bacterial foot infection presentations include:

• Cellulitis: A deep skin infection causing red, warm, swollen skin that spreads rapidly. This is one of the most common bacterial foot infections seen in summer and should never be treated at home.
• Wound infections: Open blisters or cuts that become infected, showing increasing redness, warmth, and pus or discharge.
• Infected ingrown toenails: When the nail edge cuts into the surrounding skin and bacteria take hold, the toe becomes red, swollen, and painful, and may discharge fluid.

Symptoms of a bacterial foot infection: Redness that spreads outward from a wound, warmth, swelling, pain at the site, pus or discharge, red streaking moving up the foot or leg, and fever in severe cases.

Fungal Foot Infections

Fungal infections love warm, moist environments, exactly what summer footwear and public surfaces provide.

• Athlete’s foot (tinea pedis): The most common foot infection overall. It causes itching, burning, peeling skin, and scaling, typically starting between the toes and spreading across the sole.
• Fungal toenails (onychomycosis): Nails become thick, discolored (yellow or brown), brittle, and may separate from the nail bed. This is a chronic fungal infection that worsens without treatment.

Symptoms of a fungal foot infection: Itching, burning, dry or peeling skin between the toes or on the sole, scaling, thickened or discolored toenails.

Viral Foot Infections

• Plantar warts (verruca plantaris): Caused by the human papillomavirus (HPV), plantar warts appear on the bottom of the foot as rough, textured growths, sometimes with small black dots (clotted blood vessels) at the center. They spread easily on wet shared surfaces and can be painful when standing or walking.

Bacterial vs. Fungal vs. Viral: How to Tell the Difference

This comparison is one of the most common questions our podiatrists field. Use this table as a guide, but always confirm with a professional diagnosis, as mixed infections do occur.

12 Signs Your Foot Infection Needs a Doctor

Many people wait too long to seek care for a foot infection. Here are the warning signs, if you experience any of these, do not wait:

1. Redness that is spreading beyond the original wound or irritated area
2. Skin that feels warm or hot to the touch in a localized area
3. Swelling that is getting worse, not better, after 24–48 hours
4. Pus or fluid discharge from a wound, blister, or around a toenail
5. A foul or unusual smell coming from the foot or wound
6. Red streaks moving up the foot or leg — this is a medical emergency (possible sepsis)
7. Fever or chills accompanying foot pain or redness
8. Numbness or tingling in the affected area
9. Symptoms lasting more than 72 hours despite home care
10. You have diabetes or poor circulation — any sign of infection requires same-day evaluation
11. An ingrown toenail that is infected — swollen, red, painful, and discharging
12. A wound that is not healing after 1–2 weeks
    Clinical Note from Our Team: In our San Antonio clinic, diabetic foot infections are the most urgent cases we see every summer. What appears to be a minor cut or blister can progress to a limb-threatening condition within days in patients with diabetes or peripheral neuropathy. If you are diabetic, do not wait; call us at 210-858-9866 the same day you notice any foot concern.

How Foot Deformities Increase Your Infection Risk

This is a connection many patients are not aware of, and it is one of the most important things to understand about long-term foot health.

Structural deformities of the foot create abnormal pressure points where skin breaks down more easily. When that skin breaks, it becomes a direct entry point for bacteria and fungi. The deformities we treat most frequently at Podiatry of SA include:

• Bunions: A bony protrusion at the base of the big toe causes it to push toward the smaller toes. The skin over the bunion rubs constantly against footwear, developing blisters and calluses that are highly susceptible to infection.
• Hammertoes: Toes that curl downward at the middle joint create pressure on the top of the toe where it contacts the shoe. This friction zone regularly breaks down and becomes infected.
• Claw toes: Toes that bend downward at both the middle and proximal joints create similar friction and pressure wounds.
• Flat feet: When the arch collapses entirely, abnormal weight distribution increases pressure across the sole, leading to callus buildup and skin cracking, both common infection entry points.
• High arches: Excessive inner arch height concentrates pressure on the heel and ball of the foot, causing calluses, skin breakdown, and recurring infection risk.

The cycle works both ways. Deformities make you more prone to infections. And infections, through inflammation and swelling, can worsen existing deformities, increase pain, and accelerate structural damage. Treating one without addressing the other rarely leads to long-term resolution.

How Podiatry of SA Diagnoses and Treats Foot Infections

When you visit Podiatry of SA for a foot infection, our podiatrists do not guess. Every patient receives a structured, thorough evaluation.

Our Evaluation Process

1. Comprehensive physical examination — We assess the location, size, spread, depth, and characteristics of the infection, along with your circulation and neurological status.
2. Advanced imaging when indicated — Our clinic uses on-site X-ray and ultrasound equipment to evaluate whether infection has reached deeper tissues, bone (osteomyelitis), or joint structures.
3. Accurate diagnosis — We identify the type of infection (bacterial, fungal, or viral) and any contributing structural factors before recommending any treatment.
4. Personalized treatment plan — Every treatment plan is tailored to your specific condition, overall health, activity level, and needs.

Our Treatment Options

Podiatry of SA offers the full spectrum of treatment for foot infections and deformities — all under one roof:

• Foot Medications: Prescription-strength antibiotics (topical or oral) for bacterial infections; antifungal medications for fungal infections; antiviral protocols for plantar warts.
• Wound Care: Professional debridement, cleaning, dressing, and monitoring of infected wounds to prevent spread and promote safe healing.
• Orthotics: Custom-fitted orthotic devices to redistribute pressure away from deformity-related pressure points and prevent recurring skin breakdown and infection.
• Physical Therapy: Targeted exercises and therapy to improve gait mechanics, reduce structural stress, and support recovery after infection.
• Surgery: For deformities (bunions, hammertoes, ingrown toenails) that are causing recurrent infections and do not respond to conservative treatment, surgical correction is available at our clinic.

Preventing Foot Infections This Summer: 8 Evidence-Based Tips

Most summer foot infections are preventable with consistent habits. Our podiatrists recommend:

1. Wash your feet daily with soap and warm water — including between all toes. Dry thoroughly, especially between the toes, before putting on socks or shoes.
2. Never walk barefoot on shared surfaces — always wear flip-flops or water shoes in public pools, gym showers, and locker rooms.
3. Wear properly fitted footwear that provides adequate support and cushioning. Ill-fitting shoes cause friction, blisters, and pressure — all of which invite infection.
4. Change socks daily (or more often if your feet sweat heavily) and choose moisture-wicking fabrics to keep feet dry.
5. Inspect your feet every day — look for cuts, blisters, discoloration, swelling, or any change in skin texture. Catching problems early is the single most effective prevention strategy.
6. Trim toenails straight across to prevent ingrown toenails — do not cut too short or round the corners.
7. Manage existing deformities proactively — if you have bunions, hammertoes, or flat feet, speak to a podiatrist about orthotics or protective padding before summer activity increases your risk.
8. See a podiatrist at the first sign of trouble — do not wait for symptoms to worsen. Early treatment is almost always simpler, faster, and less costly than treating an advanced infection.

Getting Care at Podiatry of SA

Podiatry of SA’s board-certified podiatrists serve patients across San Antonio and Live Oak, Texas, offering flexible scheduling to accommodate busy summer calendars. As part of the Hillside Medical Group, our clinic combines specialist expertise with the infrastructure of a full medical group — meaning you receive coordinated, comprehensive care from your first appointment through recovery.

We accept most major insurance plans. Our team speaks both English and Spanish.

To schedule an appointment:

• Call us: 210-858-9866
• Book online: Book Your Appointment With Podiatrist
• Location: 12881 I-35, Live Oak, TX 78233
• Hours: Monday – Friday, 8 AM – 5 PM

Do not wait for a small infection to become a serious problem. Our podiatrists are here to give you an accurate diagnosis and a clear treatment plan, so you can get back on your feet and enjoy the rest of your summer.