NAIL FUNGUS
What is Onychomycosis?
Onychomycosis is a fungal infection that can affect the toenails. It is a common nail condition, especially among adults and older patients. Because other nail conditions can look similar, provider review is important before any treatment pathway is recommended.
Onychomycosis is commonly associated with dermatophytes, although yeasts and non-dermatophyte molds may also be involved. Fungal nail changes may affect the nail plate, nail bed, and surrounding tissue, gradually changing the nail’s color, thickness, texture, and appearance.
When left untreated, fungal nail infections may persist or worsen over time. In some cases, they may involve additional nails, affect surrounding skin, or contribute to secondary bacterial concerns, especially in patients with diabetes, circulatory issues, neuropathy, or a weakened immune system.
COMMON
A common nail condition in adults
FUNGAL-RELATED
Often associated with dermatophytes
SLOW-GROWING
Toenail improvement can take time
Stages of nail fungus progression
ONYCHOMYCOSIS
Causes & Risk Factors
HOW IT DEVELOPS:
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Fungi may enter through small breaks or separations in the nail or surrounding skin.
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Warm, moist environments can support fungal growth.
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Shared surfaces such as pools, locker rooms, and nail salons may increase exposure risk.
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Tight or non-breathable footwear may create conditions where fungus can thrive.
YOU MAY BE AT HIGHER RISK IF YOU:
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Are over 60 years of age
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Have diabetes or peripheral vascular disease
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Have a history of athlete’s foot
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Have experienced nail trauma or injury
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Walk barefoot in communal areas
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Have a family history of nail fungus
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Have hyperhidrosis / excessive sweating
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Have a weakened immune system
ONYCHOMYCOSIS
Signs & Symptoms
Onychomycosis may develop gradually, and early nail changes can be subtle. Because similar symptoms may be caused by trauma, psoriasis, aging-related nail changes, or other conditions, provider review is important. Common signs may include:
Discoloration
Yellow, brown, or white patches or streaks may appear in the nail plate. Color changes may begin near the tip and progress over time.
Thickening
The nail may become thicker than usual and more difficult to trim. Thickness can sometimes make wearing shoes uncomfortable.
Brittleness & Crumbling
The nail may become fragile, crumble at the edges, or develop an irregular, ragged surface.
Nail Lifting (Onycholysis)
The nail plate may separate from the nail bed. The lifted area may appear white or yellowish.
Odor
A faint but noticeable odor may occur in some cases.
Discomfort or Pain
In more advanced cases, thickened or lifted nails may cause pressure, discomfort, or pain, especially in enclosed footwear.
Debris Under the Nail
White, yellow, or brown material may accumulate beneath the nail plate.
These symptoms may also be associated with other nail conditions, including trauma, psoriasis, or non-fungal nail changes. A Florida-licensed provider can help determine whether telemedicine care, prescription treatment, supportive care, or another next step may be appropriate.
ONYCHOMYCOSIS
What happens if left untreated?
Progression
Without appropriate care, fungal nail infections may persist or worsen over time. Additional nails may become involved, and visible nail changes may become more pronounced.
Spread to Surrounding Skin
Onychomycosis and tinea pedis may occur together. In some cases, fungal involvement may affect both the nails and surrounding skin.
Secondary Bacterial Infection
Damaged or lifted nail edges may create entry points for bacteria. Secondary bacterial infections may occur, especially in patients with diabetes, neuropathy, circulatory issues, or immune compromise.
Psychosocial Impact
Visible nail changes may affect confidence, footwear choices, and comfort in social situations involving exposed feet.
Complications in At-Risk Patients
Patients with diabetes, peripheral neuropathy, poor circulation, or immunosuppression should seek medical guidance, as foot and nail concerns may require closer monitoring or in-person care.
ONYCHOMYCOSIS
Prevention
While not every fungal nail infection can be prevented, daily foot care and moisture control may help reduce risk. Prevention habits may include:
Wear breathable footwear
Choose shoes made from natural materials that allow airflow. Avoid synthetic, non-breathable materials that trap moisture.
Use sandals in communal areas
Wear flip-flops or shower shoes in locker rooms, pool areas, and public showers.
Keep nails trimmed and clean
Trim nails straight across, keep them short, and clean underneath regularly. Don't share nail clippers or files.
Keep feet dry
Dry feet thoroughly after bathing, especially between the toes. If excessive sweating is a concern, consider speaking with a provider about appropriate options.
Rotate footwear
Allow shoes to fully dry between uses. Fungi thrive in persistently damp environments.
Treat athlete's foot promptly
Tinea pedis may increase the risk of nail involvement. If you suspect athlete’s foot, provider-guided care may help reduce ongoing fungal spread.
NOT SURE WHICH CONDITION YOU HAVE?
Start with eligibility. A provider review can help determine the appropriate next step.
Whether you suspect nail fungus, athlete’s foot, or both — or you are not sure what is causing your symptoms — a Florida-licensed podiatric provider within JAWS Podiatry may review your case and determine whether telemedicine care, prescription treatment, supportive care, or another next step may be appropriate.
NOTE: We respect your privacy. Your information is used to respond to your request, support eligibility review, provide appropriate next steps, and communicate with you about your case. Treatment recommendations, prescription decisions, and prescription fulfillment depend on provider review and medical eligibility.
Fugly Toenails™ treats toenail and foot-related fungal conditions only.