Acne Vulgaris: Symptoms, Causes & Treatment

Acne Vulgaris is a chronic inflammatory disease of the pilosebaceous unit (hair follicles and sebaceous glands) caused by increased sebum production, bacterial colonization (particularly Cutibacterium acnes), follicular hyperkeratinization, and inflammation. It manifests as blackheads, whiteheads, inflamed papules, pustules, cysts, and may leave permanent scars if untreated.

Acne predominantly affects adolescents and young adults during puberty when androgen levels rise, but can persist into adulthood. Studies indicate moderate to high prevalence among teenagers in the Middle East and Jordan, particularly in males. The condition typically appears on the face, chest, back, and shoulders.

Although acne is not life-threatening or contagious, it can have significant psychological and social impacts, especially in adolescents. Early diagnosis and treatment are essential to prevent complications and permanent scarring.

Symptoms of acne vary in severity and location depending on the individual. Lesions commonly appear on the face (forehead, cheeks, chin), chest, back, and shoulders. In females, symptoms may worsen premenstrually due to hormonal fluctuations.

• Blackheads (Open Comedones): Open pores clogged with sebum and dead skin cells, appearing dark because oxidized lipid.
• Whiteheads (Closed Comedones): Closed pores beneath the skin surface filled with sebum, appearing white or pale yellow.
• Papules: Small red, inflamed bumps without a head, resulting from follicular inflammation.
• Pustules: Red bumps with white or yellow pus-filled centers.
• Nodules: Large, firm, tender subcutaneous lesions that often leave scars.
• Cysts: Deep, pus-filled cavities beneath the skin that are painful and highly prone to scarring.
• Erythema and Edema: Affected areas appear red, swollen, and tender.
• Purulent Drainage: Squeezing lesions may release pus or blood.
• Itching or Burning Sensation: Some patients experience pruritus or burning in affected areas.
• Scarring (Post-inflammatory): Atrophic or hypertrophic scars may remain after healing, especially in severe cases.
• Post-inflammatory Hyperpigmentation: Dark spots may persist after healing, particularly in darker skin types.
• Psychological Impact: Shame, anxiety, and depression often accompany moderate to severe acne, especially in adolescents.

• Increased Sebum Production: Androgen hormones during puberty stimulate sebaceous glands to enlarge and produce excess sebum.
• Follicular Hyperkeratinization: Dead skin cells and sebum accumulate and plug hair follicles, preventing normal drainage.
• Cutibacterium acnes Proliferation: This naturally occurring bacterium thrives in lipid-rich, anaerobic follicular environments.
• Inflammation and Immune Response: The body's inflammatory response to bacterial colonization causes redness, swelling, and deep cysts.
• Hormonal Fluctuations: Estrogen and progesterone variations in women can trigger or worsen acne, especially premenstrually.
• Medications: Corticosteroids and androgen-dominant contraceptives can exacerbate acne.
• Genetic Factors: Family history of severe acne increases individual risk.
• Comedogenic Products: Certain cosmetics and oils can clog pores and worsen breakouts.

• Age: Adolescents and young adults (especially 12-24 years) are most affected.
• Gender: Males often experience more severe acne; females may have cyclical flare-ups due to hormonal fluctuations.
• Family History: First-degree relatives with severe acne increase individual risk.
• Oily Skin Type: Those with naturally oily skin are more susceptible.
• Psychological Stress: Stress elevates cortisol, increasing sebum production and inflammation.
• Smoking and Environmental Pollution: Exposure to pollutants and cigarette smoke increase inflammation and acne severity.
• Heavy Skincare and Cosmetics: Thick makeup and oily creams can clog pores.
• Poor Skincare Hygiene: Inadequate cleansing allows dirt, oil, and dead cells to accumulate.
• Diet High in Refined Carbohydrates: Some studies link high-glycemic foods and saturated fats to increased acne.
• Sleep Deprivation: Insufficient sleep disrupts hormonal balance and immune function.

Diagnosis is primarily clinical, based on physical examination of the skin. Laboratory tests and imaging are rarely needed in typical cases. The dermatologist evaluates the type, location, and severity of lesions to classify acne severity and recommend appropriate treatment.

• Clinical Examination: The physician carefully inspects the skin to identify lesion types (blackheads, whiteheads, papules, cysts) and count affected areas. Acne severity is classified as mild (scattered comedones and few papules), moderate (more papules and pustules with inflammation), or severe (nodules and cysts with risk of permanent scarring).
• Medical History Assessment: Questions about disease duration, triggering factors (menstrual cycle in females, stress, medications), and prior treatments help guide diagnosis.
• Blood Tests (Rare): In cases of unexplained severe acne in females, the physician may order hormone levels (DHEA-S, testosterone, free testosterone) to rule out underlying disorders such as polycystic ovary syndrome (PCOS) or androgen excess.
• Bacterial/Fungal Culture (Rare): If secondary bacterial or fungal infection is suspected, a skin swab may be taken for microscopic examination or culture.
• Imaging (Very Rare): Ultrasound or imaging may be used only if very deep cysts requiring surgical intervention are suspected.

Medications

• Topical Treatments: Used for mild to moderate acne. Include: (a) Retinoids (tretinoin, adapalene) that reduce inflammation and accelerate skin turnover; (b) Benzoyl Peroxide that kills bacteria and reduces sebum; (c) Topical antibiotics (clindamycin, erythromycin); (d) Salicylic Acid for exfoliation; (e) Azelaic Acid for resistant cases.
• Oral Medications: For moderate to severe acne. Include: (a) Antibiotics (doxycycline, minocycline) that kill bacteria and reduce inflammation (typically 3-6 months); (b) Combined oral contraceptives for females to regulate hormones; (c) Spironolactone for androgen suppression in females.
• Isotretinoin: A powerful retinoid for severe, resistant acne or acne with significant scarring risk. Dramatically reduces sebum production but has serious side effects including dry skin/lips/eyes, elevated liver enzymes, and teratogenicity (strictly contraindicated in pregnant females or those who may become pregnant). Requires close monthly medical supervision.

Procedures and Techniques

• Chemical Peels: Use of acids (glycolic acid, salicylic acid) to exfoliate the superficial skin layer and unclog pores.
• Laser and Light Therapy: Specific wavelengths (red light, near-infrared) kill acne bacteria, reduce inflammation, and decrease sebum production. Multiple sessions required.
• Manual Comedone Extraction: Careful removal of blackheads and whiteheads using a specialized extractor tool, must be performed by a trained professional to avoid infection and scarring.
• Intralesional Steroid Injection: Direct injection of corticosteroid into large cysts and nodules to rapidly reduce inflammation and pain.
• Other Advanced Therapies: Microneedling, radiofrequency, and other devices may be used as adjunctive treatments for resistant cases.

Lifestyle and Skincare Modifications

• Regular Cleansing: Wash face with lukewarm water and a gentle or mild cleanser twice daily (morning and evening). Avoid vigorous scrubbing which worsens inflammation.
• Use Lightweight Moisturizers: Choose oil-free and non-comedogenic moisturizers.
• Avoid Heavy Makeup: If needed, use light, oil-free products and remove before sleep.
• Do Not Squeeze Lesions: Picking or squeezing increases inflammation and scarring; resist the urge.
• Avoid Irritants: Tight clothing, helmets, and objects that rub the skin can exacerbate acne.
• Sun Protection: Use gentle SPF 30+ sunscreen, especially when using photosensitizing medications like retinoids.
• Dietary Improvement: Reduce high-glycemic foods, saturated fats, and full-fat dairy; increase vegetables, fruits, and water intake.
• Stress Management: Regular exercise, mindfulness, and relaxation techniques help reduce stress-related acne.
• Adequate Sleep: Aim for 7-9 hours nightly to maintain hormonal balance and immune function.
• Avoid Smoking and Pollution: Smoking increases inflammation and aging; minimize exposure when possible.

• Permanent Scarring: Especially after large cysts and nodules, depressed or hypertrophic scars may remain and require specialized treatments (laser, filler injections) that may be lifelong.
• Post-inflammatory Hyperpigmentation: Dark spots may persist after healing, particularly in darker skin types, taking months to resolve.
• Secondary Bacterial Infection: Squeezing or scratching lesions risks superimposed bacterial infection leading to increased inflammation and potential abscess formation.
• Psychological and Social Impact: Shame, anxiety, depression, and social withdrawal especially in adolescents can affect self-esteem and academic/professional performance.
• Acne-like Eruptions Mimicking Rosacea: In rare cases, severe recurrent acne may progress to rosacea-like presentation.
• Medication-Induced Worsening: Some medications may paradoxically worsen acne if not carefully selected.
• Contact Dermatitis: Allergic reaction to topical treatments or skincare products may increase inflammation and erythema.

• Regular and Proper Cleansing: Wash face twice daily with lukewarm water and gentle cleanser without harsh scrubbing to remove excess oil, bacteria, and dead cells.
• Use Non-Comedogenic Products: Choose cosmetics, makeup, and skincare products labeled "non-comedogenic" to avoid pore clogging.
• Avoid Touching the Face: Hands transfer bacteria and dirt; minimize face touching throughout the day.
• Change Pillowcases and Towels Regularly: Wash pillowcases and towels at least twice weekly to prevent bacterial accumulation.
• Avoid Picking or Squeezing: Resist the urge to pick acne lesions to minimize inflammation, scarring, and secondary infection.
• Manage Stress and Anxiety: Regular exercise, yoga, meditation, and relaxation reduce cortisol levels and acne severity.
• Improve Sleep Quality: Aim for 7-9 hours of regular sleep nightly to maintain hormonal balance and immunity.
• Optimize Diet: Reduce processed foods, saturated fats, and refined sugars; increase vegetables, fruits, water, and essential nutrients.
• Avoid Smoking and Pollution: Smoking increases inflammation and skin aging; minimize exposure to pollutants when possible.
• Seek Early Medical Advice: Consult a dermatologist as soon as acne appears to begin treatment early and prevent permanent scarring.