Oral thrush
White patches, a red or raw surface, burning, altered taste, or soreness may fit oral thrush. Recent antibiotics, inhaled steroids, dentures, diabetes, infancy, older age, or immune suppression affect care.
Infection assessment guidance
Common Infection Care
Bacterial, viral, fungal and tick-related conditions require different treatment. MedBox pharmacists can assess eligible minor ailments, recommend supportive care, prescribe when appropriate, review treatment response, or refer when testing or urgent medical care is needed.
General education only. An assessment may lead to self-care, non-prescription treatment, an eligible prescription, testing, or referral.
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Direct answer
The right treatment starts with the likely cause
Antibiotics do not treat viruses or fungi, and antifungals do not treat bacterial disease. Symptoms, exposures, location, duration, medicines, pregnancy, and immune status guide assessment.
Tick bites and Lyme prevention
Remove a tick promptly and record when and where exposure occurred. Prophylaxis is only appropriate in eligible circumstances; an expanding rash or flu-like, neurologic, joint, or cardiac symptoms need medical care.
Urinary tract infection
Burning, urgency, frequent urination, and pelvic discomfort may fit an uncomplicated UTI, but fever, flank pain, vomiting, pregnancy, male or child patients, and severe illness require referral.
UTI symptoms and treatmentPink eye
Bacterial, viral, allergic, and irritant-related conjunctivitis can overlap. Eye pain, vision change, marked light sensitivity, injury, or contact-lens complications need prompt assessment.
Pink eye symptoms and treatmentVaginal yeast infection
Itching, irritation, redness, swelling, and thick white discharge may fit candidiasis. First episodes, pregnancy, unusual discharge or odour, pelvic pain, and recurrence need individualized assessment.
Yeast infection symptoms and treatmentImpetigo and cold sores
Pharmacists may assess eligible localized cases. Extensive, severe, recurrent, eye-adjacent, rapidly spreading, or systemically unwell presentations need referral.
Use the right medicine for the right infection
A pharmacist can help identify the likely category of infection, check eligibility for minor-ailment care, and prevent ineffective or unsafe self-treatment.
- Review symptoms, site, duration, exposure, recurrence, medicines, allergies, pregnancy, and immune status.
- Recommend supportive care or non-prescription treatment when appropriate.
- Prescribe eligible treatment for specific Ontario minor ailments after assessment.
- Support adherence, side-effect management, follow-up, and referral when treatment is not working.
Seek urgent medical care for infection red flags
- trouble breathing, confusion, fainting, severe weakness, or a stiff neck
- rapidly spreading redness, severe swelling, high fever, or severe pain
- eye involvement with pain, vision change, or marked light sensitivity
- dehydration, persistent vomiting, or inability to take fluids or medicine
- immune suppression with worsening symptoms or a serious exposure
- after a tick bite: expanding rash, facial weakness, palpitations, severe headache, or new joint swelling
If symptoms are severe or you believe there is an emergency, call 911 or go to the nearest emergency department. For non-emergency health advice in Ontario, contact Health811.
Reduce spread and protect treatment effectiveness
Prevention varies by infection, but hygiene and medication stewardship are important across many conditions.
- Wash hands and avoid sharing towels, makeup, razors, drinkware, or other personal items when infection may spread by contact.
- Clean dentures, inhaler spacers, contact-lens equipment, or other devices according to professional instructions.
- Complete prescribed treatment and do not save or share leftover antibiotics or antifungals.
- Check for ticks after outdoor exposure and use approved repellents and protective clothing.
- Return for reassessment when symptoms worsen, recur, or fail to improve in the expected timeframe.
TC
Clinical review
Written and clinically reviewed by Tejal Chauhan
BScPhm, RPh, Pharmacist and Owner, MedBox Rx Pharmacy
Reviewed July 24, 2026 · Next review July 24, 2027. This page uses current Ontario pharmacist scope and cited health guidance. Individual treatment depends on an assessment.
Frequently asked questions
Common Infection Care FAQs
Can a pharmacist prescribe antibiotics for any infection?
No. Ontario pharmacists may prescribe specified drugs for eligible minor ailments after assessment. Many infections require testing, a different prescriber, urgent care, or supportive treatment rather than antibiotics.
Can I use leftover antibiotics?
No. The medicine may be wrong for the cause, dose, duration, or person, and partial treatment can delay care and contribute to resistance. Ask a pharmacist or prescriber for assessment.
Does every tick bite need antibiotics?
No. Most tick bites do not cause Lyme disease. Prophylaxis depends on the tick, geography, attachment and timing. Remove the tick promptly and ask for an eligibility assessment.
When should an infection be reassessed?
Return when symptoms worsen, spread, recur, or do not improve as expected; when a new fever or systemic symptom develops; or when treatment causes a concerning reaction.