Your skin is your body’s largest organ, and when it starts sending warning signals, it’s important to listen. Many people think of dermatologists as only seeing your outside. But they are actually highly trained to see internal health via the skin.
Here are 10 signs it’s time to book an appointment with a dermatologist.
Acne That Won’t Go Away or Comes Back
Acne is common, but when it doesn’t respond to over-the-counter treatments or keeps recurring, it could indicate underlying issues like hormonal imbalances or even acne scarring. It is also a potential sign of a serious skin disease known as HS.

Unexplained Rashes or Redness
Sudden Hair Loss or Scalp Issues
Noticing more hair in your brush or developing a flaky, itchy scalp? These symptoms could be tied to dermatological concerns like alopecia or seborrheic dermatitis. Early detection can make a huge difference.
A Mole That’s Changing Shape or Color
Moles that itch, bleed, grow, or change color need immediate attention. These are potential signs of skin cancer, and early detection is critical. A dermatologist will assess the mole and, if necessary, perform a biopsy to ensure your safety.

Persistent Itching Without a Clear Cause
If you’ve been scratching endlessly with no relief, your skin could be signaling an underlying issue, like dry skin, allergies, or something more complex.
Rough, Scaly Patches of Skin
Scaly patches could be signs of psoriasis, fungal infections, or even precancerous spots. These conditions can worsen without treatment, so getting a professional opinion is essential.
Wounds or Sores That Won’t Heal
If you’ve noticed a wound or sore that hasn’t healed within two weeks, it’s time to seek help. Non-healing wounds can signal skin cancer or underlying medical issues like diabetes.
Severe Sunburns or Excessive Sun Damage
If you’ve had severe sunburns or notice signs of sun damage like wrinkles, dark spots, or rough texture, it’s worth consulting a dermatologist. Advanced treatments, including laser therapy, can rejuvenate your skin and reduce risks.
Hives or Sudden Allergic Reactions
Unexplained hives or allergic reactions could be linked to your skin’s sensitivity or an allergy you weren’t aware of. A dermatologist can help identify triggers and recommend preventive measures.
You’ve Never Had a Full-Body Skin Exam
Skin exams are a vital step in maintaining long-term health. If you’ve never had one—or it’s been a few years—consider scheduling an appointment to catch any issues early. Many skin conditions including cancer only become a real problem if you don’t catch them early!
How to See a Dermatologist in Ontario
Check out our blog guide on how to see a dermatologist in Ontario here.
Our Barrie dermatology clinic provides a comprehensive approach to skin care, combining specialized expertise, efficient care pathways, and cutting-edge research.
With all of our specialists working under one roof, we ensure seamless communication and personalized care throughout your treatment.