Acne is a common skin condition caused by clogged hair follicles due to excess oil (sebum), dead skin cells, and bacteria. Pimples are the visible result – raised bumps that may be red, inflamed, or filled with pus. Acne can range from mild blackheads to severe cystic lesions.

Other Name(s)

• Acne vulgaris
• Zits
• Comedones (blackheads & whiteheads)
• Papules, pustules, nodules, cysts
• Hormonal acne
• Cystic acne

Types of Acne

Acne Vulgaris: DermNet New Zealand

Causes

• Excess sebum production
• Dead skin cell buildup
• Bacterial overgrowth (Cutibacterium acnes)
• Hormonal changes (puberty, menstruation, pregnancy)
• Certain medications (e.g., steroids, lithium)
• Genetics
• Stress

Risk Factors

• Adolescents and young adults
• Family history of acne
• Hormonal fluctuations
• Use of oily cosmetics or hair products
• High-glycemic diets and dairy (controversial)
• Smoking

Who Is Vulnerable/Susceptible?

• Teens and young adults (puberty hormones)
• Women during menstruation, pregnancy, or menopause
• People with oily skin or clogged pores
• Individuals with family history of acne
• Stress-prone or poor skincare habits

Complications

• Permanent scarring
• Pigmentation issues
• Psychological distress (anxiety, low self-esteem)
• Cyst formation
• Secondary skin infections

Prevention

• Use non-comedogenic products
• Cleanse skin gently without over-washing
• Avoid touching or picking pimples
• Maintain a balanced diet
• Use topical treatments consistently

Common Symptoms

• Blackheads and whiteheads
• Red, tender bumps (papules)
• Pus-filled pimples (pustules)
• Painful cysts or nodules
• Scarring or dark spots (post-inflammatory hyperpigmentation)

Diagnosis and Tests

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• Visual skin exam
• Hormonal evaluation (if adult or persistent acne)
• Skin culture (if infection suspected)
• Rarely, blood tests or imaging for underlying conditions

Treatment and Therapies

Over-the-Counter:

• Benzoyl peroxide: Kills bacteria
• Salicylic acid: Unclogs pores
• Adapalene: Retinoid for cell turnover

Prescription:

• Topical retinoids (e.g., tretinoin)
• Topical antibiotics (e.g., clindamycin)
• Oral antibiotics (e.g., doxycycline)
• Hormonal therapy (e.g., birth control pills, spironolactone)
• Isotretinoin (for severe cystic acne)

Procedures:

• Chemical peels
• Laser/light therapy
• Drainage of cysts
• Cortisone injections

Complementary Approaches

• Tea tree oil
• Green tea extract
• Zinc supplements
• Low-glycemic diet
• Probiotics

Statistics

• Affects ~85% of people aged 12–24
• ~50 million Americans have acne annually
• Adult acne affects ~15% of women and ~5% of men over age 25

Cost of Management

Insurance Coverage

• Most plans cover:

• Dermatology visits
• Prescription medications
• Acne procedures (if medically necessary)

Prognosis

• Excellent with early and consistent treatment
• May require long-term maintenance
• Risk of scarring if untreated or picked

What Happens if Ignored?

• Persistent breakouts
• Scarring and pigmentation
• Emotional distress (depression, anxiety)
• Reduced self-esteem

Living with Acne

• Use gentle cleansers
• Avoid picking or squeezing
• Wash pillowcases and makeup brushes regularly
• Choose non-comedogenic products
• Track triggers (diet, stress, hormones)

New Developments

• AI-powered acne tracking apps
• Personalized skincare based on microbiome
• Non-antibiotic therapies
• Smart wearable acne sensors

Related Issues

• Rosacea
• Folliculitis
• Hidradenitis suppurativa
• Hyperpigmentation
• Scarring

Ongoing Research

• Gut-skin axis and acne
• Hormonal modulation
• Genetic predisposition
• Acne in darker skin tones

Clinical Trials & Participation

• ClinicalTrials.gov: Acne
• Harvard Health Acne Overview
• CDC Acne & Skin Health

Important Resources

• Mayo Clinic Acne Guide
• Cleveland Clinic Pimples & Acne Resource
• MedlinePlus Acne Encyclopedia
• Harvard Health Acne Hub
• FamilyDoctor.org Acne Guide
• CDC Staph & Skin Infections

Source: America Healthline Medical Team