Alopecia Areata: Symptoms, Causes & Treatment

Alopecia areata is a chronic autoimmune disorder in which the immune system mistakenly attacks hair follicles, leading to sudden and unpredictable hair loss. Symptoms typically appear as round or oval patches on the scalp, but can affect the beard, eyebrows, eyelashes, and any body hair.

The condition affects approximately 0.1-0.2% of the global population with no significant gender difference. Onset can occur at any age, but is most common between ages 15 and 45. In the Middle East and Jordan, prevalence rates align with global statistics, with increasing awareness in recent years. The condition causes no physical pain, though psychological and social impact can be significant for patients.

The exact cause remains incompletely understood, though genetic, environmental, and psychological factors are believed to play a role. Approximately 10-25% of patients have a family history. The good news is that the disease is non-contagious and many cases experience spontaneous remission, especially when patches are limited.

Alopecia areata symptoms typically begin suddenly and may develop rapidly over weeks or months. Patients often don't notice hair loss initially, discovering it on pillows or during shampooing. Symptom severity varies greatly between individuals and cases.

• Round hair loss patches: Circular or oval areas of hair loss on the scalp appearing suddenly.
• Weak, brittle hair at patch edges: Hair surrounding affected areas is easily plucked and fragile.
• Hair loss in other areas: Beard, eyebrows, eyelashes, and body hair may shed as well.
• Mild itching or burning: Some patients experience itching or burning sensation in affected areas before hair loss.
• Nail abnormalities: In severe cases, nail changes may appear (small pits or ridges).
• Complete hair loss: In severe cases, complete scalp hair loss (alopecia totalis) or total body hair loss (alopecia universalis) may occur.
• Mild scalp redness: Affected areas may appear slightly red initially.
• No physical pain: The disease doesn't cause pain; impact is primarily psychological and cosmetic.
• Waxing and waning pattern: Stabilization may occur followed by recurrence in new areas.
• Psychological distress: Psychological impact can be severe, especially in young people and women.

• Autoimmune dysfunction: The immune system mistakenly attacks hair follicles, treating them as foreign bodies. This inflammation around the follicle leads to hair shedding.
• Genetic factors: If a parent or close relative has alopecia areata, your risk increases significantly. Studies identify specific genes that increase susceptibility.
• Psychological stress: Severe emotional stress (bereavement, job loss, trauma) can trigger or exacerbate the condition in genetically predisposed individuals.
• Viral and bacterial infections: Some viral infections (influenza, COVID-19) may trigger alopecia areata onset in genetically susceptible people.
• Hormonal imbalances: Hormonal changes (postpartum, puberty, menopause) may contribute to disease appearance or progression.
• Nutritional deficiencies: Deficiency in iron, vitamin D, zinc, and vitamin B12 may increase disease risk.
• Other autoimmune conditions: People with thyroid disease or lupus have higher risk of developing alopecia areata.

• Positive family history: Having relatives with alopecia areata increases risk up to 8-fold.
• Age 15-45 years: Disease is most common in young adults and adolescents.
• Severe psychological stress: Major life stressors and chronic tension.
• Other autoimmune diseases: Particularly thyroid disease, celiac disease, and type 1 diabetes.
• Vitamin and mineral deficiencies: Iron, zinc, vitamin D, and B12 deficiency.
• Recent viral infections: Certain viral infections may trigger disease onset.
• Female gender: Some studies suggest slightly higher prevalence in women.
• Chronic inflammatory conditions: Chronic body inflammation may increase risk.
• Personal history of allergies: People with skin allergies or general atopy may be more susceptible.
• Certain medications: Immunosuppressants and in rare cases vaccines may correlate with symptom onset.

Diagnosis of alopecia areata is primarily clinical, based on patient examination. The physician observes affected areas and patch characteristics. While diagnosis is usually straightforward, additional testing may be ordered to confirm diagnosis or exclude other conditions.

• Clinical examination: Physician examines scalp and other areas, observing patch appearance and remaining hair. A pull test may be performed at patch margins.
• Pull test: Gentle pulling of several hairs from patch margin: if 3 or more pull out easily, suggesting alopecia areata. Hair shows abnormal root shape.
• Skin biopsy: In rare unclear cases, physician may take small skin sample (2-3 mm) for microscopic examination to confirm inflammation around follicles.
• Blood tests: May assess iron levels (ferritin and iron), vitamin D, zinc, vitamin B12, and thyroid function (TSH and free T4). Normal values: iron 60-170 mcg/dL, vitamin D >30 ng/mL.
• Thyroid screening: TSH and thyroid antibody tests to exclude concurrent thyroid disease.
• Microscopic examination: Simple microscopy may show hair details and inflammation in the area.
• Wood's lamp imaging: May be used to exclude other fungal conditions.

Medications

• Topical corticosteroids: Cream or ointment applied directly to affected areas twice daily for several months. Reduces inflammation around follicles. Examples: Triamcinolone or Betamethasone.
• Intralesional corticosteroid injections: Direct injection into patches every 4-6 weeks. Very effective for localized patches. Triamcinolone injected at 2.5-10 mg/mL concentration. Response rate reaches 60-80% for individual patches.
• JAK inhibitors (Baricitinib/Ruxolitinib): Recently FDA-approved medications for extensive alopecia areata. Baricitinib taken orally (2 mg daily). Ruxolitinib as topical cream. Promising results in severe and diffuse cases.
• Minoxidil (Rogaine): Topical solution applied twice daily to scalp. Stimulates hair growth and can be combined with other treatments. Success rate lower than corticosteroids alone.
• Anthralin (Dithanol): Cream applied to affected areas. Stimulates local immune response. Must avoid contact with healthy skin.
• Topical calcineurin inhibitors: Tacrolimus and pimecrolimus creams - safe topical agents especially for children and facial areas.
• Systemic corticosteroids: Oral steroid tablets for severe diffuse cases. Typical dose: 0.5-1 mg/kg daily for several weeks with gradual tapering.

Procedures and Topical Treatments

• Phototherapy: Narrow-band UVB (NB-UVB) light therapy 2-3 times weekly. Effective especially for diffuse cases.
• Laser therapy: Low-level laser therapy (LLLT) may stimulate hair growth.
• Cryotherapy: Application of cold spray to affected areas to stimulate growth - limited use.
• Topical heat and massage: Some studies suggest benefit of regular scalp massage.

Lifestyle Changes and Psychological Support

• Stress management: Practice relaxation techniques, yoga, meditation, and cognitive behavioral therapy to reduce stress.
• Nutritional correction: Consume iron-rich foods (red meat, lentils), zinc (oysters, beef), vitamin D (fatty fish, eggs), and B12 (meat, dairy). Supplements may be needed.
• Psychological support and counseling: Mental health support is crucial for improving quality of life and managing anxiety and depression.
• Camouflage techniques: Wearing hats, headscarves, or temporary hair dyes may help psychologically.
• Avoid hair pulling and trauma: Avoid pressure on affected areas or attempting to remove fragile hair.
• Healthy lifestyle: Adequate sleep (7-8 hours), regular exercise, avoiding smoking and alcohol.
• Scalp care: Use gentle shampoo and avoid harsh chemical products.

• Complete scalp hair loss (Alopecia Totalis): Loss of all head hair occurs in ~5% of cases. May be permanent or temporary depending on treatment response.
• Total body hair loss (Alopecia Universalis): Loss of all body hair including eyelashes and eyebrows. Very rare (1% of cases). Severe psychological impact.
• Psychological complications and depression: Anxiety, depression, and social isolation can be severe especially in youth, women, and teenagers.
• Sleep disturbances: Worry about the disease may cause insomnia and chronic sleep disorders.
• Permanent nail dystrophy: In very severe cases, permanent nail deformities with pitting and ridges may occur.
• Treatment-resistant cases: Some cases don't respond to any treatment, increasing frustration.
• Medication side effects: Long-term corticosteroid use may cause skin atrophy or secondary infections.
• Quality of life impairment: May impact self-confidence, social relationships, and work performance.

• Stress management: Practice relaxation, yoga, and meditation regularly. Seek psychological support when needed. Minimize life stressors as much as possible.
• Maintain healthy nutrition: Eat balanced meals rich in iron, zinc, vitamin D, and B12. Avoid extreme diets.
• Regular check-ups: Monitor iron, zinc, vitamin D, and B12 levels regularly and treat any deficiencies.
• Treat other autoimmune diseases: If you have thyroid disease or other autoimmune conditions, ensure they are well controlled.
• Avoid psychological trauma: Seek support and psychological counseling during difficult times. Develop stress coping mechanisms.
• Regular exercise: Regular physical activity improves mental and immune health. Aim for at least 150 minutes weekly.
• Adequate and regular sleep: 7-8 hours daily. Good sleep is essential for immune regulation.
• Avoid smoking and alcohol: Smoking and alcohol weaken immunity and increase inflammation.
• Avoid scalp injuries: Avoid trauma, burns, and harsh friction to the scalp.
• Maintain scalp hygiene: Wash hair with gentle shampoo regularly and avoid harsh products and harmful dyes.