Overview
Dermatophyte infections (ringworm, athlete's foot, jock itch) grow in the outer layer of skin, thriving in warm, moist areas such as feet, groin and skin folds. Yeast infections such as pityriasis versicolor and candida affect the trunk and folds.
Using a steroid cream on a fungal rash makes it spread and change appearance (tinea incognito), which is why an accurate assessment of the rash matters before treatment.
When to seek urgent medical help
- • Spreading redness, swelling, pain or fever suggesting bacterial infection
- • Fungal infection with diabetes or a weakened immune system
- • Scalp or beard involvement, which needs oral treatment
Symptoms and signs
- Ring-shaped rash with a raised, scaly advancing edge and clearer centre
- Itching, burning or stinging, often worse with sweating
- Peeling, cracking or maceration between the toes
- Well-demarcated red or dark rash in the groin or under the breasts
- Pale or brown patches on the chest and back that fail to tan
- Scalp scaling with patchy hair loss
Management and treatment
Most skin infections respond to a topical antifungal used for the full course, typically 2-4 weeks and continuing at least a week after the rash clears. Scalp, nail and extensive infections need oral antifungal treatment.
Your ChatDoc doctor confirms the diagnosis from your photos and history, prescribes the right agent and duration, and explains how to stop reinfection.
Prescription treatment options
Topical terbinafine or imidazole creams
First-line treatment for ringworm, athlete's foot and jock itch applied for 2-4 weeks.
Antifungal-steroid combination
Short-term option when inflammation and itch are severe, used alongside antifungal cover.
Oral terbinafine or itraconazole
For scalp, nail, widespread or resistant infections that topicals cannot reach.
Ketoconazole shampoo
Effective for pityriasis versicolor and to reduce carriage and recurrence.
Any prescription is issued only after a doctor has reviewed your case and considers the treatment safe and appropriate for you.
Your online Fungal Infections assessment
- 1
Tell us about your concern
Share symptoms, past treatments, medicines and relevant health information.
- 2
Upload clear photos
Upload photos of your concern where applicable.
- 3
Doctor reviews your case
Technology helps organise your answers, but every assessment and prescription decision is made by a doctor, who may message you if they need more information.
- 4
Get your personalised plan
A personalised prescription is issued if treatment is clinically appropriate.
Prognosis and outlook
Itch usually settles within days and the rash clears within 2-4 weeks. Pale patches after pityriasis versicolor can take months to repigment even though the infection is gone.
Recurrence is common if footwear, towels and damp skin folds are not addressed, so prevention advice is part of every treatment plan.
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This page is general medical information and does not replace a personal consultation. Always seek urgent care for severe or rapidly worsening symptoms. ChatDoc is not an emergency service. Call 999 (UK) or 112 (EU) for life-threatening emergencies or 111 for urgent non-emergency help. Do not wait for an online reply.