Dr. Guillaume Castilloux

Dr. Guillaume Castilloux provides comprehensive family medical care for a wide variety of health concerns affecting patients of all ages, including but not limited to:

Mental Health Concerns

• Insomnia & Chronic Sleep Disturbances: Comprehensive primary care management of common sleep disorders to restore healthy sleep patterns and improve overall health and well-being.
• Depression & Other Mood Disorders (e.g., Dysthymia, Seasonal Affective Disorder - Management): Providing compassionate, evidence-informed primary care and management strategies for those affected by depression and other common mood disorders, with a focus on recovery and long-term stability.
• Initial Assessment & Referral for Other Mental Health Concerns (e.g., OCD, PTSD, Eating Disorders, Bipolar Disorder, Psychosis): Ensuring individuals with complex or acute mental health needs are connected with the right resources and expertise for effective and safe management.
• Anxiety Disorders (Generalized Anxiety, Panic Disorder, Social Anxiety - Management): Ongoing management and support for anxiety disorders, helping patients develop coping strategies, achieve symptom remission or reduction, and improve overall well-being.

Common Acute Conditions

• Acute Musculoskeletal Injuries (Sprains, Strains, Minor Back/Neck Pain): Initial assessment, diagnosis, and management of common minor acute injuries like ankle sprains, muscle strains (e.g., hamstring, calf), ligament tears (low grade), and acute episodes of uncomplicated low back or neck pain.
• Lower Respiratory Tract Infections (Acute Bronchitis, Community-Acquired Pneumonia): Managing lower respiratory tract infections that cause persistent cough (productive or non-productive), chest discomfort, shortness of breath, and fever.
• Upper Respiratory Tract Infections (URTIs - Colds, Flu, Sinusitis, Pharyngitis): Care for acute respiratory illnesses, including advice on symptom management, appropriate use of antibiotics (only if bacterial infection is confirmed or highly suspected), and guidance on when to seek further medical attention for complications.

Pediatric Common Issues

• Adolescent Health Care & Counseling (Physical, Mental, Sexual Health, Lifestyle, Substance Use): Creating a safe, non-judgmental, and youth-friendly healthcare environment where teenagers feel comfortable discussing their health concerns openly, receive accurate information, build a trusting relationship with their doctor, and are empowered to take charge of their health.
• Common Childhood Infections (Viral & Bacterial - Ear, Throat, Chest, Skin, GI): Diagnosing and treating frequent acute illnesses in children, such as otitis media (ear infections), streptococcal pharyngitis (strep throat - with rapid testing if available), common colds and influenza, croup, bronchiolitis, roseola, hand-foot-and-mouth disease, viral and bacterial gastroenteritis (vomiting and diarrhea), uncomplicated urinary tract infections, and common skin infections (impetigo, cellulitis - mild).
• Pediatric Asthma, Eczema & Allergy Management (Primary Care): Helping children and their families manage long-term health conditions effectively, enabling active participation in all aspects of childhood including school, sports, and play, while minimizing symptoms and exacerbations.
• Developmental, Behavioral & Learning Concerns in Children (Screening, Initial Assessment, Guidance & Referral Coordination): Performing routine developmental surveillance and targeted screening (e.g., using Ages & Stages Questionnaires - ASQ) when parents or educators raise concerns regarding potential developmental delays (in speech/language, gross/fine motor skills, cognitive abilities, social-emotional development). Offering initial assessment and guidance for common behavioral issues (e.g., significant tantrums, sleep problems, childhood anxiety, aggression), symptoms suggestive of ADHD, or learning difficulties.

Dermatological Skin Conditions

• Primary Care Skin Cancer Screening & Early Detection (Suspicious Mole/Lesion Assessment): Playing a vital primary care role in the early detection of skin cancer, which significantly improves prognosis, and facilitating prompt access to specialist dermatological care when needed.
• Psoriasis (Mild to Moderate Plaque Psoriasis - Initial Management): Primary care support for individuals with psoriasis, coordinating with specialist care as needed for more advanced treatment options and comprehensive management of this chronic systemic condition.
• Viral Skin Infections (Common Warts, Molluscum Contagiosum, Herpes Simplex, Herpes Zoster/Shingles): Diagnosing and managing common viral skin infections. This includes common/plantar warts and molluscum contagiosum (observation, cryotherapy, topical agents like salicylic acid or cantharidin). For Herpes Simplex Virus (HSV - cold sores/fever blisters, genital herpes): antiviral therapy (acyclovir, valacyclovir, famciclovir) for acute outbreaks or suppressive therapy for frequent recurrences, plus counseling on transmission. For Herpes Zoster (Shingles): prompt antiviral therapy to reduce severity/duration and risk of post-herpetic neuralgia (PHN), along with pain management. Shingles vaccination advice for eligible adults.

Adult Common Health Issues

• Helicobacter pylori (H. pylori) Infection - Testing & Eradication Therapy: Testing for Helicobacter pylori infection in appropriate clinical contexts (e.g., patients with peptic ulcer disease, certain types of gastritis, dyspepsia in high-prevalence areas, or family history of gastric cancer) using non-invasive methods like urea breath test, stool antigen test, or serology (less reliable for active infection).
• Benign Prostatic Hyperplasia (BPH) - Symptom Management & Monitoring: Management includes lifestyle advice (fluid management, avoiding bladder irritants), behavioral therapies (timed voiding), and prescription of medications such as alpha-blockers (e.g., tamsulosin, alfuzosin) to relax prostate/bladder neck muscles, or 5-alpha-reductase inhibitors (e.g., finasteride, dutasteride) to shrink prostate volume. Monitoring for symptom improvement and medication side effects.
• Allergic Conjunctivitis & Dry Eye Syndrome - Primary Care Management: Helping patients find relief from itchy, irritated, or dry eyes through appropriate primary care interventions and guidance.
• Anemia (Iron Deficiency, Vitamin B12/Folate Deficiency - Diagnosis & Management): Managing common types of nutritional anemia such as iron deficiency anemia (oral or intravenous iron supplementation, dietary advice to increase iron intake and absorption, investigation for source of chronic blood loss if suspected - e.g., GI bleed, heavy menses) and megaloblastic anemia due to vitamin B12 or folate deficiency (oral or parenteral supplementation, dietary counseling, investigation for underlying causes like pernicious anemia, malabsorption syndromes - celiac disease, Crohn's, post-gastric surgery, medication effects - metformin, PPIs).

This list offers some examples of common conditions managed in family practice. A diagnosis is always based on an individual assessment by Dr Castilloux. If your specific health concern isn't listed, please contact the clinic to discuss your needs.

• Diabetes Mellitus Care (Type 1, Type 2, Gestational, Prediabetes): Personalized diabetes care plans focusing on achieving optimal glycemic control, preventing acute and chronic complications (cardiovascular, renal, neurological, ophthalmological), and empowering patient self-management.
• Eczema, Psoriasis (Mild) & Other Common Rashes: Helping patients control flare-ups of itchy, inflamed skin and maintain healthy skin barrier function.
• Stress Management, Burnout & Adjustment Disorder Support: Supportive counseling and problem-solving for stress-related symptoms, promoting well-being and preventing escalation to more severe mental health conditions.
• Care for Minor Injuries & Acute Musculoskeletal Complaints: Providing first-line care for common minor injuries, including wound care advice, pain management strategies, and guidance on activity modification and rehabilitation.
• Evaluation of Acute Headaches & Dizziness / Vertigo: Assessing new or sudden onset headaches or dizziness to differentiate between common causes (e.g., tension headache, migraine, benign positional vertigo) and more serious underlying conditions, providing initial management and referral if indicated.

Note: This list highlights some of the key services offered by Dr Castilloux. For a comprehensive understanding of all services, or to discuss your specific health needs, please schedule a consultation.

All services are provided in accordance with the scope of practice for Médecin de familles in QC and the ethical and professional standards set by The Collège des médecins du Québec (CMQ).

At Hôpital de Notre-Dame-du-Lac, family medicine is centered on a collaborative partnership to help individuals like you achieve significant improvements in your health, manage ongoing conditions effectively, and enhance your overall well-being. Dr Castilloux frequently works with patients towards goals such as:

• Patients with wanting to understand if their family history of cancer means they need earlier or different screening tests can find relief and achieve gaining a much clearer and personalized understanding of their individual health risks (e.g., cardiovascular disease based on Framingham score, inherited cancer predispositions, osteoporosis risk) and practical, actionable, evidence-based steps they can realistically take to mitigate these risks effectively under Dr Castilloux's care, often allowing them to resume passionately pursuing their cherished creative hobbies (like painting, writing, or playing music), engaging in intellectually stimulating leisure interests, or dedicating time to new learning adventures with renewed enthusiasm and sustained focus without former limitations.
• Many patients have successfully addressed feeling isolated or lonely and it's starting to affect their mood and motivation with Dr Castilloux's support. This often leads to their family being effectively connected by Dr Castilloux to invaluable local community resources, patient advocacy organizations, and peer support groups that have demonstrably improved their coping abilities, social support network, and overall well-being and the ability to fully participate in actively participating in ongoing professional development activities, industry conferences, or learning new, marketable skills for their current career path or potential future career transitions once more.

Your personalized healthcare plan, developed in discussion with Dr Castilloux, will be thoughtfully designed to help you reach your specific functional, preventative, and wellness objectives. He believes in empowering patients with the knowledge and support needed to take an active role in their health journey.

Dr Castilloux's practice is located at Hôpital de Notre-Dame-du-Lac, situated in a family medical practice in central Témiscouata-sur-le-Lac neighborhood of Témiscouata-sur-le-Lac. The clinic is conveniently located near local community centers, schools, and shopping areas and is accessible via major local public transit routes. Ample parking is generally accessible close to the clinic entrance; please observe local signage.

Can Dr Castilloux help with mental health concerns like anxiety or depression?

Absolutely. Dr Castilloux is well-equipped to address a wide range of mental health issues as part of comprehensive family practice. He can help diagnose conditions like anxiety or depression, provide counseling and support, manage psychotropic medications when appropriate, and coordinate care with mental health specialists if required. If you're struggling with your mental well-being, Dr Castilloux is a good person to start the conversation with and seek help from in a confidential and supportive environment.

Is seeing a family doctor (Médecin de famille) covered by Régie de l'assurance maladie du Québec (RAMQ) in QC?

Medically necessary visits to a family doctor are typically covered by the Régie de l'assurance maladie du Québec (RAMQ) for eligible residents with a valid provincial health card. However, some services (e.g., cosmetic procedures, most travel medicine consultations, sick notes, insurance forms, driver's medicals) may not be covered and might have an associated fee. Please confirm with Hôpital de Notre-Dame-du-Lac if you have questions about specific non-insured services or potential fees.

I have multiple health problems. How does Dr Castilloux handle complex care?

As a family doctor, Dr Castilloux is specifically trained to manage patients with multiple health problems (multimorbidity) and complex care needs. He will take a holistic approach, considering how your various conditions interact and how treatments for one might affect another. Dr Castilloux will help prioritize your health concerns, coordinate care with any specialists involved, manage your medications to avoid harmful interactions (polypharmacy review), and develop a comprehensive care plan that aligns with your overall health goals and quality of life. Open communication about all your conditions and concerns is key.

Do I need a referral to see a family doctor (Médecin de famille) in QC?

Generally, you don't need a referral to see a family doctor in Quebec if they are accepting new patients. However, finding a family doctor who is accepting new patients can be challenging. You may find it helpful to check the College of Physicians and Surgeons of Quebec website or use the Guichet d'accès à un médecin de famille (GAMF). A referral is usually required to see specialists.

How can I find a family doctor (Médecin de famille) in QC who is accepting new patients?

Finding a family doctor in Quebec who is accepting new patients can take time and effort. Check the College of Physicians and Surgeons of Quebec website for a "Find a Doctor" tool, use the Guichet d'accès à un médecin de famille (GAMF) if available, ask for recommendations from friends and family, or contact local community health centres or new patient clinics directly.

Does Dr. Guillaume Castilloux at Hôpital de Notre-Dame-du-Lac offer virtual (video) or phone appointments?

Yes, Dr Castilloux at Hôpital de Notre-Dame-du-Lac offers virtual (video) and/or phone appointments for certain types of consultations when clinically appropriate. These can be convenient for discussing some test results, managing stable chronic conditions, prescription renewals for ongoing medications (not controlled substances), or for certain mental health follow-ups. However, many conditions, new problems, or situations requiring a physical examination will still necessitate an in-person visit for accurate assessment and diagnosis. Please discuss with our reception staff or Dr Castilloux if a virtual appointment might be suitable for your specific needs. Provincial health plan coverage for virtual visits may vary; please check with Hôpital de Notre-Dame-du-Lac regarding any potential fees for uninsured virtual services.

What exactly is a family doctor (Médecin de famille) and what is their role?

Your family doctor (Médecin de famille) is your primary healthcare provider, expertly trained to care for a wide spectrum of health issues, from newborns to seniors. They manage acute illnesses and injuries, oversee the care of long-term chronic diseases, provide routine health screenings and lifestyle counseling, administer vaccinations, and ensure you get access to specialized medical services through referrals when needed. The continuity of care they provide, understanding your health history and individual needs, is fundamental to effective family medicine.

Hôpital de Notre-Dame-du-Lac
58 rue de l’Église
Témiscouata-sur-le-Lac, QC, G0L 1X0

Phone: (418) 899-6751

Dr. Guillaume Castilloux is regulated by the Code des professions & Loi médicale (Québec) in QC and is a registered member in good standing with The Collège des médecins du Québec (CMQ).

Registration Number: 16382

Verify registration with The Collège des médecins du Québec (CMQ): https://www.cmq.org/en/directory/physicians?number=16382

Family doctors like Dr Castilloux are skilled in managing a wide range of health issues. For urgent or life-threatening emergencies, please call 911 or visit the nearest emergency department. It is always recommended to maintain open communication with your family doctor about all aspects of your health, including any treatments received from other practitioners.