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Alopecia
Alopecia is the general medical term for hair loss, ranging from mild thinning to total baldness. It is not a single condition but a symptom of many different underlying disorders. While hair loss is often dismissed as a cosmetic concern, it serves as a significant biological signal of internal health and can have profound psychological effects. The condition is broadly classified into non-scarring (where hair follicles remain intact and regrowth is possible) and scarring (cicatricial) alopecia, where follicles are permanently destroyed.
Key Points
- Alopecia affects both men and women of all ages.
- It is critical to distinguish between scarring (permanent) and non-scarring (potentially reversible) hair loss.
- Common causes include genetics, autoimmune disease, stress, and hormonal shifts.
- Early diagnosis is vital, particularly for scarring alopecia, to prevent permanent loss.
- Treatments range from topical solutions and injections to oral medications.
What is alopecia?
Alopecia refers to a disruption in the body's hair production cycle. In a healthy scalp, about 90% of hair is growing (anagen) while 10% is resting (telogen). Alopecia occurs when this cycle is interrupted, follicles shrink (miniaturization), or the immune system attacks the hair root.
Who gets alopecia?
Hair loss is extremely common. Androgenetic alopecia (pattern baldness) affects up to 50% of men by age 50 and a significant number of post-menopausal women. Alopecia Areata (patchy hair loss) can affect children and adults equally. Sudden shedding often affects women post-pregnancy or after severe illness.
Contact Smooth Skin Clinic for a specialized hair loss assessment.
Clinical features
Symptoms vary significantly by type:
Gradual Thinning: Widening of the part line or receding hairline.
Patchy Loss: Smooth, round, coin-sized bald spots (Alopecia Areata).
Sudden Shedding: Handfuls of hair coming out when washing or brushing (Telogen Effluvium).
Scaling & Redness: Itchy, red patches or pustules on the scalp (suggesting scarring alopecia or fungal infection).
Diagnosis and differential diagnosis
Accurate diagnosis is essential because treatments for one type of hair loss may worsen another. Diagnosis involves:
Trichoscopy: Examining the scalp under high magnification to see follicle patterns.
Pull Test: To assess the severity of active shedding.
Blood Tests: To rule out thyroid issues, iron deficiency, or hormonal imbalances.
Scalp Biopsy: Taking a small sample of skin to determine if the hair loss is scarring or non-scarring.
Impact and complications
Hair is intrinsically linked to self-image and cultural identity. Hair loss frequently leads to anxiety, depression, and social withdrawal. Physical Complications: Loss of scalp hair increases the risk of sunburn and actinic damage (pre-cancers) on the scalp. Loss of eyelashes/eyebrows allows sweat and dust to enter the eyes more easily.
Causes and triggers
Genetics: The most common cause (Male/Female Pattern Hair Loss).
Autoimmune: The body attacks its own hair follicles (Alopecia Areata).
Hormonal Changes: Pregnancy, menopause, or thyroid problems.
Stress: Physical trauma (surgery, high fever) or severe emotional stress can trigger shedding.
Medications: Chemotherapy, certain blood thinners, and blood pressure medications.
Hairstyles: Tight pulling (braids/ponytails) causes Traction Alopecia.
Treatment Options
- Topical Corticosteroids Minoxidil stimulates blood flow and prolongs the growth phase.
- Intralesional Corticosteroids injections into bald patches are the gold standard for Alopecia Areata to suppress immune attack.
- Oral Medications Anti-androgens: (e.g., Finasteride/Dutasteride for men, Spironolactone for women) to block the hormones causing thinning.
JAK Inhibitors: New, advanced medications for severe Alopecia Areata. - PRP (Platelet-Rich Plasma) Using your own blood’s growth factors to stimulate dormant follicles.
- Light Therapy Low-level laser therapy to encourage cellular activity.
Expectations and Outcomes: Hair growth is slow (1cm per month). Treatments typically require 3–6 months to show visible improvement. The goal is often "maintenance" (keeping the hair you have) as much as regrowth.
Frequently Asked Questions
Have questions about scheduling or what to expect? Here are answers to common inquiries to help you feel fully prepared.
No. The hair you see in the drain during a shower was already detached and ready to fall out (part of the natural shedding cycle). Washing simply dislodges them. Keeping the scalp clean is actually important for follicle health.
Yes. Significant physical or emotional stress can push a large number of hair follicles into the "resting" phase prematurely. This causes them to shed all at once about 3 months after the stressful event. This is called Telogen Effluvium and is usually temporary.
Hair supplements are generally only effective if you have an actual deficiency (e.g., low iron or zinc). For the vast majority of patients with genetic male/female pattern baldness, vitamins alone will not stop the hair loss process. We recommend a blood test before spending money on expensive supplements.