Dr. Aida Ilze Crosthwaite

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

Pediatric Common Issues

• 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.
• Common Childhood Infections (Viral & Bacterial - Ear, Throat, Chest, Skin, GI): Expert management of a wide spectrum of acute illnesses affecting infants, toddlers, and school-aged children, including clear guidance for parents on home care, symptom relief, and when to seek urgent re-assessment.
• 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.
• Adolescent Health Care & Counseling (Physical, Mental, Sexual Health, Lifestyle, Substance Use): Providing confidential, respectful, and age-appropriate comprehensive primary care for teenagers (typically ages 12-18+). Addressing a wide range of issues including pubertal development, acne, body image concerns, sports injuries, mental health (screening for anxiety, depression, stress, eating disorders), sexual health education (contraception, STI prevention/screening, healthy relationships), substance use (screening, brief intervention, counseling), and promoting healthy lifestyle choices (nutrition, physical activity, sleep, responsible digital media use).

Dermatological Skin Conditions

• Eczema (Atopic Dermatitis), Contact Dermatitis & Seborrheic Dermatitis: Comprehensive primary care for common inflammatory skin conditions, aiming to alleviate symptoms, prevent secondary infections, and improve patient comfort and overall skin health.
• 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.
• Benign Skin Lesion Assessment & Management (Skin Tags, Seborrheic Keratoses, Cysts, Lipomas): Primary care management of common, non-cancerous skin lesions, including reassurance and simple removal procedures where appropriate and within scope.
• Bacterial Skin Infections (Impetigo, Folliculitis, Cellulitis - uncomplicated): Effective antimicrobial therapy for common bacterial skin infections to resolve infection, prevent spread, and alleviate associated symptoms.

Joint Muscle Pain

• Mechanical Low Back & Neck Pain (Acute, Subacute, Chronic - Uncomplicated): Primary care coordination for back and neck pain, including referral to physiotherapy, chiropractic, massage therapy, or specialist pain services when appropriate for persistent or disabling symptoms.
• Gout & Pseudogout (Crystal Arthropathies) - Acute Attack Management & Chronic Prevention Strategies: Diagnosing (often clinical, supported by serum uric acid levels; joint aspiration for crystal analysis if diagnostically uncertain or to rule out septic arthritis) and managing acute gout or pseudogout attacks with appropriate anti-inflammatory medications (NSAIDs like naproxen/indomethacin, colchicine, oral or intra-articular corticosteroids).
• Polymyalgia Rheumatica (PMR) - Diagnosis, Management & Monitoring (Often with Rheumatology Co-Management): Recognizing the characteristic clinical presentation of Polymyalgia Rheumatica (PMR) in older adults (typically age >50 years) – symmetrical morning stiffness and aching in the shoulders, neck, and pelvic girdle – often associated with significantly elevated inflammatory markers (ESR, CRP). Initiating treatment with low-dose corticosteroids (e.g., prednisone 12.5-25 mg daily) which usually results in a rapid and dramatic improvement in symptoms, thus supporting the diagnosis. Vigilantly screening for and differentiating from Giant Cell Arteritis (GCA/Temporal Arteritis), which can co-exist with PMR (or occur independently) and requires urgent higher-dose steroid therapy and specialist (rheumatology/ophthalmology) referral to prevent irreversible vision loss.

Common Acute Conditions

• Upper Respiratory Tract Infections (URTIs - Colds, Flu, Sinusitis, Pharyngitis): Addressing symptoms such as cough, sore throat (including rapid strep testing where available), nasal congestion, facial pain/pressure, and fever associated with common URTIs.
• Common Acute Skin Conditions (Rashes, Infections, Bites, Minor Burns): Managing various acute dermatological conditions with appropriate topical or oral medications (antibiotics, antifungals, corticosteroids, antihistamines) to alleviate itching, redness, pain, swelling, and discomfort.
• Allergic Reactions (Mild to Moderate - e.g., Hay Fever, Hives, Minor Food Allergy Symptoms): Helping patients manage their allergy symptoms effectively to improve daily comfort and quality of life.
• 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.

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

• Routine Health Check-ups & Physicals for Adults: Comprehensive care focused on health promotion and disease prevention throughout adulthood.
• Insomnia & Sleep Disorder Management (Primary Care Approach): Thoroughly evaluating persistent sleep problems (difficulty falling asleep, staying asleep, non-restorative sleep), offering education on optimal sleep hygiene, principles of cognitive behavioral therapy for insomnia (CBT-I) or facilitating referrals, and judiciously considering short-term medication if necessary after addressing underlying causes.
• Management of Other Chronic Conditions (e.g., GERD, IBS, Anemia): Providing ongoing care and management for a variety of other long-term health issues such as chronic gastroesophageal reflux disease (GERD), irritable bowel syndrome (IBS), chronic anemia, and more, focusing on symptom control and quality of life.
• Osteoporosis Screening, Prevention & Management: Helping patients reduce their risk of fragility fractures through comprehensive bone health management.
• Eating Disorder Screening & Referral Coordination: Primary care role in early recognition of eating disorders and ensuring patients access comprehensive treatment pathways.

Note: This list highlights some of the key services offered by Dr. Crosthwaite. 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 Family Doctors in ON and the ethical and professional standards set by The College of Physicians and Surgeons of Ontario (CPSO).

At Oak Ridges Medical Centre, 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. Crosthwaite frequently works with patients towards goals such as:

• If needing a prescription for preventative medication before travelling to a high-risk area for malaria has put feeling profoundly secure, deeply supported, and well-understood in having a trusted, accessible, and long-term medical advisor and health partner in {preferred_name} for any and all health questions, new symptoms, or emerging concerns that arise throughout their lives on hold, Dr. Crosthwaite works with patients toward developing a deeply trusted, respectful, and enduring long-term therapeutic relationship with their dedicated and accessible primary care physician, {preferred_name}, built on open communication and mutual respect, helping them regain their previous level of function.
• Struggling with their child complaining of stomach aches frequently, possibly related to stress or diet? Dr. Crosthwaite helps patients target benefiting from {preferred_name}'s proactive and systematic approach to mental health screening and discussion during routine visits, leading to earlier identification and support for emerging psychological distress, making a return to activities such as confidently enjoying a varied, balanced, and largely unrestricted diet (unless medically indicated for very specific diagnosed conditions like celiac disease or severe allergies) without undue fear of triggering adverse reactions, pain, or significant digestive distress more achievable.
• Many seek Dr. Crosthwaite's help for chest pain or pressure, especially with exertion or other concerning symptoms – they know this could be urgent. The collaborative goal is ensuring their children, from infancy through adolescence, received the complete schedule of timely and appropriate immunizations, effectively protecting them from a wide range of preventable and potentially serious childhood diseases, allowing a return to valued activities like successfully and relatively stress-free managing daily commutes on often crowded or unpredictable public transport systems or by car in heavy traffic without significant exacerbation of physical pain or anxiety symptoms.
• Dr. Crosthwaite's care for a persistent metallic taste in their mouth or other unusual sensory changes is designed to result in successfully and confidently navigating the often complex, fragmented, and sometimes overwhelming healthcare system with {preferred_name} acting as their knowledgeable guide, steadfast advocate, and central, reliable coordinator of all their medical care, so patients can resume activities such as confidently and effectively advocating for their own complex health needs, specific treatment preferences, and the essential healthcare requirements of their family members when interacting within the broader, sometimes impersonal, healthcare system with confidence.

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

Dr. Crosthwaite practices at Oak Ridges Medical Centre, located in the Hamilton Mountain West Central (Southam, Bonnington) neighbourhood of Hamilton. The clinic is conveniently located near Eastgate Square (East End) and is accessible via Hamilton Street Railway (HSR). Ample parking is generally accessible close to the clinic entrance; please observe local signage.

Do I need a referral to see a family doctor (Family Doctor) in ON?

Generally, you do not need a referral to see a family doctor in Ontario if the doctor is accepting new patients. However, finding a family doctor who is accepting new patients can be challenging. Resources like Health Care Connect in Ontario, your local health authority website, or the College of Physicians and Surgeons of Ontario patient-doctor matching service (if available) may be helpful. A referral from a family doctor is usually required to see most medical specialists.

Is seeing a family doctor (Family Doctor) covered by Ontario Health Insurance Plan (OHIP) in ON?

Medically necessary visits to a family doctor are typically covered by OHIP for eligible Ontario residents with a valid health card. However, some services, such as cosmetic procedures, most travel medicine consultations, sick notes, insurance forms, and driver's medicals, may not be covered and might have an associated fee. Please confirm with Oak Ridges Medical Centre if you have questions about specific services or potential fees.

How can I find a family doctor (Family Doctor) in ON who is accepting new patients?

You can check the website of the College of Physicians and Surgeons of Ontario (it often has a 'Find a Doctor' tool). In Ontario, you can register with Health Care Connect. Ask friends, family, or colleagues for recommendations. Contact local community health centres or new patient clinics directly. Finding a family doctor may take time and effort.

Does Dr. Crosthwaite at Oak Ridges Medical Centre offer virtual (video) or phone appointments?

Yes, Dr. Crosthwaite at Oak Ridges Medical Centre 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. Crosthwaite if a virtual appointment might be suitable for your specific needs. Provincial health plan coverage for virtual visits may vary; please check with Oak Ridges Medical Centre regarding any potential fees for uninsured virtual services.

What happens if Dr. Crosthwaite determines I need to see a medical specialist?

As your family doctor, Dr. Crosthwaite acts as your primary care coordinator. If she believes your condition requires specialized assessment or treatment, she will explain why a specialist consultation is necessary and will arrange the referral. Dr. Crosthwaite will send your pertinent medical details to the specialist. The specialist's office will then typically contact you to book the appointment. It's important to keep Oak Ridges Medical Centre informed of any specialist appointments you attend and any new diagnoses or treatments recommended by the specialist so Dr. Crosthwaite can continue to coordinate your overall care effectively.

What does 'preventative care' involve with a family doctor like Dr. Crosthwaite?

Preventative care provided by Dr. Crosthwaite aims to stop health issues from occurring or to catch them at an early, more manageable stage. This includes regular physical exams, vaccinations, screenings for common conditions like certain cancers or heart disease risk factors (high blood pressure, high cholesterol), and personalized advice on maintaining a healthy lifestyle through diet, physical activity, and avoiding harmful habits like smoking. It’s about being proactive with your health rather than just treating problems as they arise, and Dr. Crosthwaite can help guide you in these efforts.

What exactly is a family doctor (Family Doctor) and what is their role?

A family doctor (Ontario) is a physician who has completed post-graduate training in family medicine. They are skilled in providing continuous and comprehensive medical care, health maintenance, and preventive services to patients of all ages. This includes diagnosing and treating a vast array of illnesses, managing complex long-term health conditions, offering health education and counseling on lifestyle choices, and acting as your advocate and guide within the broader healthcare system.

Oak Ridges Medical Centre
Unit Suite 100, 201-444 Concession St, Suite 100
Hamilton, ON, L9A 1C2

Phone: (905) 540-4433

Dr. Aida Ilze Crosthwaite is regulated by the Regulated Health Professions Act, 1991 & Medicine Act, 1991 (Ontario) in ON and is a registered member in good standing with The College of Physicians and Surgeons of Ontario (CPSO).

Registration Number: 63844

Verify registration with The College of Physicians and Surgeons of Ontario (CPSO): https://doctors.cpso.on.ca/DoctorDetails/Crosthwaite-Aida-Ilze/0049866-63844

Family doctors like Dr. Crosthwaite 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.