Common Causes of Hair Loss and When to See a Dermatologist

If you've noticed more hair than usual in your shower drain or hairbrush, you aren't alone. While shedding some hair daily is normal, persistent thinning or sudden bald patches can signal an underlying medical condition. 

At Dermatology Associates of Western Pennsylvania, we help patients of all ages understand and manage changes in their hair density. Our team of board-certified dermatologists specializes in diagnosing the root causes of thinning hair and creating personalized treatment plans.

Understanding the common causes of hair loss and knowing when to seek professional help is the first step toward restoring both your hair and your peace of mind.

What are the most common causes of hair loss?

Common causes of hair loss include genetic factors, autoimmune conditions, and temporary physical or emotional stress. 

For most people, gradual thinning is due to androgenetic alopecia, also known as male- or female-pattern baldness, which is driven by genetics and hormones. 

Another common cause is alopecia areata, an autoimmune condition where the body's immune system mistakenly attacks hair follicles, often causing round patches of hair loss.

To address these conditions, we offer advanced medical hair loss treatments, including platelet-rich plasma (PRP) therapy, systemic medications, and topical therapies to stimulate natural growth. 

Common misconceptions about thinning hair

Many people believe that taking over-the-counter biotin supplements or using expensive cosmetic shampoos can cure hair loss, but science shows otherwise. 

Unless you have a laboratory-confirmed nutritional deficiency, extra vitamins won't stop genetic or hormonal hair thinning. In fact, the Skin Appendage Disorders (2024) journal warns that taking excess biotin can actually interfere with critical emergency lab tests, making it a risky habit without medical supervision.

Another common myth is that washing your hair too frequently causes it to fall out. In fact, the hairs you see in the drain during a shower naturally detached from their blood supply weeks ago and were destined to shed. 

According to the American Academy of Dermatology (AAD, 2022), avoiding washing allows oil and yeast to build up on your scalp, causing inflammation that can make hair shedding worse.

When should you see a dermatologist for hair loss?

We recommend seeing a dermatologist for hair loss if you notice sudden shedding, patchy bald spots, scalp itching, or if your thinning is affecting your self-esteem. 

Early intervention is key because many treatments are far more effective when started before significant follicular miniaturization occurs. Our dermatologists can perform a thorough evaluation to pinpoint the exact cause of your hair concerns and develop a strategy tailored to your specific needs.

If you're ready to address your thinning hair with a customized, medically backed plan, we're here to help. Please schedule a visit with our experienced team at our Coraopolis, PA office today.