Editor biographies vii<div>1 Disease Overview </div><div>1.1 Definition <br></div><div>1.2 Epidemiology </div><div>1.3 Risk factors </div><div>1.4 Mortality, morbidity, and quality of life </div><div>References </div><div><br></div><div>2 Clinical Presentation of Hidradenitis Suppurativa </div><div>2.1 Clinical presentation <br></div><div>2.2 Types of lesions </div><div>2.3 Involved areas </div><div>2.4 Clinical course </div><div>2.5 Prognosis and disease complications </div><div>2.6 Comorbidities and systemic associations </div><div>References </div><div><br></div><div>3 Pathophysiology of Hidradenitis Suppurativa </div><div>3.1 Pathogenesis <br></div><div>3.2 Genetics </div><div>3.3 External factors </div><div>3.4 Mechanical factors </div><div>3.5 Endocrinology</div><div>3.6 Inflammation </div><div>3.7 The role of bacteria</div><div>3.8 Immune dysregulation </div>3.9 Key points </div><div>References</div><div><br></div><div><div>4 Diagnostic Workup </div><div>4.1 Introduction</div><div>4.2 Classification systems </div><div>4.3 Delay in diagnosis </div><div>4.4. Differential diagnosis</div><div>4.5 Referral criteria <div>References </div><div><br></div><div>5 Treatment of Hidradenitis Suppurativa </div><div>5.1 Introduction <br></div><div>5.2 Preventative measures & lifestyle modifications </div><div>5.3 Medical management </div><div>5.4 Radiotherapy </div><div>5.5 Light and laser therapy </div><div>5.6 Surgery </div><div>5.7 Conclusion </div><div>References</div></div></div>