Dr. Bryan Ko Guevara

28/05/2026

Be cautious with IV “whitening” drips and “slimming” medications being promoted without proper approval, safety data, or evidence. Just because it is administered by a doctor or nurse does NOT automatically mean it is safe, effective, or regulated for that indication.

Some of these products may carry risks involving the liver, kidneys, heart, or severe allergic reactions. Others may contain unregistered ingredients or be marketed with misleading claims.

27/05/2026

“In dermatology, the skin can tell a story—but the biopsy confirms the truth.”

A skin biopsy is important because many skin diseases can look similar clinically but behave very differently in terms of treatment, prognosis, and systemic implications.

In autoimmune blistering diseases such as Bullous Pemphigoid, a biopsy helps confirm the diagnosis with precision.

Many patients are initially told blisters are due to “allergy,” “infection,” or even dietary causes. Histopathology provides objective evidence.

27/05/2026

Working on a holiday — but always grateful for the opportunity to share knowledge and discuss evidence-based dermatology with fellow dermatologists.

Yesterday’s topics:
• Moisturizers and the importance of barrier repair
• The role of antihistamines in dermatologic diseases

“The best part of teaching is learning together with passionate colleagues.”

27/05/2026

A typical day in the life of a dual board-certified dermatologist and dermatopathologist:

🔬 Start the day with a microscope — reviewing skin biopsies from both clinic patients and referring physicians. Every slide tells a story, where clinicopathologic correlation becomes essential in arriving at accurate diagnoses.

👩‍⚕️ Clinic then begins with patient consultations ranging from inflammatory skin diseases, hair and nail disorders, to complex medical dermatology cases.

💉 The day continues with procedures and treatments:
• Injectables
• Lasers
• Non- and minimally invasive aesthetic procedures
• Skin surgeries and biopsies
• Advanced therapeutic interventions

📚 A balance of medical dermatology, dermatopathology, aesthetics, and procedural medicine — all centered on improving patient care through precision and evidence-based practice.

23/05/2026

Glad to meet up with fellow dermatologists from Taiwan, Thailand, Singapore, Malaysia, and the Philippines — exchanging insights and learning together as immunodermatology continues to advance for patients with Psoriasis and Atopic Dermatitis.

Collaborative learning across the region continues to push the field forward toward more precise, targeted, and patient-centered care.

📍 Bangkok, Thailand

18/05/2026

⚠️ HEALTH MISINFORMATION ALERT ⚠️

I recently came across this circulating social media post claiming that: “Up to 80% of people with chronic eczema test positive for intestinal parasites.”

This is misleading and medically inaccurate.

A few important clarifications:

❌ The photo circulating in this poster is NOT eczema.
✔️ It is more consistent with PSORIASIS.

❌ Psoriasis and eczema are NOT caused by intestinal parasites or “worms.”
There is currently NO scientific evidence linking these inflammatory skin diseases to parasites.

✔️ Psoriasis and eczema are complex inflammatory conditions influenced by:
• Genetics
• Immune system dysregulation
• Environmental triggers

Spreading inaccurate medical claims can lead patients away from evidence-based care and appropriate treatment.

TRUST BOARD-CERTIFIED dermatologists for proper diagnosis and management of skin, hair, and nail diseases.

— Dr. Bryan Ko Guevara

Dual Board-Certified Dermatologist & Dermatopathologist

17/05/2026

Honored to take part in the Multidisciplinary Interactive Symposium in Immunology (MISI 2026) — a meaningful platform bringing together specialists across disciplines to discuss the evolving role of immunology in patient care.

As our understanding of immune-mediated diseases continues to expand, collaboration between specialties becomes increasingly important in delivering more precise, holistic, and patient-centered treatment.

Grateful for the opportunity to learn, share insights, and contribute to discussions that bridge dermatology, immunology, and multidisciplinary care.

13/05/2026

Some days begin before sunrise and end past midnight.

💻From academic committee work in Quezon City to clinical collaborations in Makati—every meeting is part of a bigger mission: improving dermatology and immunodermatology care in the Philippines.

11/05/2026