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  • Abdominal Pain, Acute
  • Abdominal pain, Chronic
  • Alopecia
  • Amenorrhea
  • Amnesia
  • Anosmia
  • Bleeding, Excessive
  • Breast Lumps
  • Chest Pain
  • Constipation in Adults
  • Constipation in Children
  • Cough in Adults
  • Cough in Children
  • Crying
  • Diarrhea in Adults
  • Diarrhea in Children
  • Diplopia
  • Dizziness
  • Dry Mouth
  • Dysmenorrhea
  • Dyspepsia
  • Dysphagia
  • Dyspnea
  • Dysuria
  • Earache
  • Ear Discharge
  • Edema
  • Edema During Late Pregnancy
  • Epistaxis
  • Erectile dysfunction
  • Eyelid Swelling
  • Eye Pain
  • Fever
  • Fever, Acute, in Adults
  • Fever, Chronic (FUO)
  • Fever in Infants and Children
  • Floaters
  • Gas
  • Gastrointestinal Bleeding
  • Halitosis
  • Headache
  • Hearing Loss
  • Hearing Loss: Sudden Deafness
  • Hematospermia
  • Hematuria
  • Hemoptysis
  • Hiccups
  • Hirsutism
  • Insomnia and Excessive Daytime Sleepiness
  • Itching
  • Itching, Anal
  • Jaundice in Adults
  • Jaundice in Neonates
  • Joint Pain, Monarticular
  • Joint Pain, Polyarticular
  • Knee pain
  • Lump in Throat
  • Nasal Congestion and Rhinorrhea
  • Nausea and Vomiting During Early pPregnancy
  • Nausea and Vomiting in Adults
  • Nausea and Vomiting in Infants and Children
  • Neck and Back Pain
  • Neck Mass
  • Nipple Discharge
  • Orthostatis Hypotension
  • Pain
  • Pain, Chronic
  • Palpitations
  • Pelvic Pain
  • Pelvic Pain During Early Pregnancy
  • Polyuria
  • Priapism
  • Red Eye
  • Scrotal Pain
  • Sore Throat
  • Stomatitis
  • Stridor
  • Syncope
  • Tearing
  • Tinnitus
  • Toothache
  • Tremor
  • Urinary Frequency
  • Urinary Incontinence in Adults
  • Urinary Incontinence in Children
  • Urinary Retention
  • Urticaria
  • Vaginal Bleeding
  • Vaginal Bleeding During Early Pregnancy
  • Vaginal Bleeding During Late Pregnancy
  • Vaginal Itching and Discharge
  • Vision, Blurred
  • Vision Loss, Acute
  • Weakness, Generalized
  • Wheezing
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Se

Sea anemone sting

Marine Bites and Stings: Cnidaria (Coelenterates, such as jellyfish and sea anemones)

Seabather's eruption

Marine Bites and Stings: Seabather's eruption

Seasonal affective disorder

Depressive Disorders: Etiology
Depressive Disorders: Phototherapy

Seasonal allergic conjunctivitis

Allergic Conjunctivitis

Seasonal rhinitis

Allergic Rhinitis

Sea urchin injury

Marine Bites and Stings: Sea Urchins

Sebaceous cyst

  • otic

  • Otic Tumors: Benign otic tumors

    Sebaceous glands

  • inflammation and obstruction of

  • Acne and Related Disorders

    Seborrheic blepharitis

    Eyelid and Lacrimal Disorders: Chronic

    Seborrheic dermatitis

    Atopic Dermatitis: Diagnosis
    Seborrheic Dermatitis

  • riboflavin deficiency and

  • Riboflavin: Symptoms and Signs

    Seborrheic keratoses

    Chronic Effects of Sunlight: Actinic keratoses
    Seborrheic Keratoses

  • cancer-related

  • Skin Manifestations of Internal Disease: Internal cancer

    Secobarbital

  • poisoning with

  • Symptoms and Treatment of Specific Poisons Tables

    Secondhand smoke

    Tobacco Use: Chronic effects

    Second impact syndrome

    Traumatic Brain Injury (TBI): Pathophysiology

    Second messengers

    Neurotransmission: Receptors

    Secretin provocative test

    Pancreatic Endocrine Tumors: Diagnosis

    Secretin test

    Chronic Pancreatitis: Diagnosis

    Sedatives (hypnotics)

  • in ARDS

  • Acute Hypoxemic Respiratory Failure (AHRF, ARDS): Mechanical ventilation in ALI/ARDS

  • chamomile interactions with

  • Some Possible Dietary Supplement–Drug Interactions*Tables

  • in critical care patient

  • Agitation, Confusion, and Neuromuscular Blockade: Sedation

  • in elderly

  • High-Risk Drugs in the Elderly (Based on the Beers Criteria)Tables

  • in endotracheal intubation

  • Airway Establishment and Control: Sedation and analgesia

  • in mechanical ventilation

  • Overview of Mechanical Ventilation: Sedation and comfort
    Liberation from Mechanical Ventilation

  • overdose of

  • Anxiolytics and Sedatives: Toxicity or overdose

  • porphyria and

  • Drugs and Porphyria*Tables

  • withdrawal from

  • Anxiolytics and Sedatives: Withdrawal and detoxification

    Sedatives

  • abuse of

  • Anxiolytics and Sedatives

  • in brain injury

  • Traumatic Brain Injury (TBI): Increased intracranial pressure

  • intracranial pressure and

  • Coma and Impaired Consciousness: ICP control

  • in sleep disorders

  • Approach to the Patient With a Sleep or Wakefulness Disorder: Hypnotics
    Guidelines for the Use of HypnoticsTables
    Oral Hypnotics in Common UseTables

  • in status asthmaticus

  • Ventilatory Failure: Status asthmaticus (SA)

    Seidel sign

    Corneal Abrasions and Foreign Bodies: Diagnosis

    Seizures

    Examples of Disorders Associated With Defects in NeurotransmissionTables
    Seizure Disorders
    Causes of SeizuresTables
    Clinical Clues to the Causes of Symptomatic SeizuresTables

  • absence

  • Seizure Disorders: Generalized seizures
    Choice of Drugs for SeizuresTables

  • alcohol withdrawal and

  • Alcohol: Withdrawal
    Alcohol: Withdrawal

  • atonic

  • Seizure Disorders: Generalized seizures
    Drug Treatment of Seizures: Drug Choice for Long-Term Treatment
    Choice of Drugs for SeizuresTables
    Choice of Drugs for SeizuresTables

  • barbiturate withdrawal and

  • Anxiolytics and Sedatives: Withdrawal

  • brain injury and

  • Traumatic Brain Injury (TBI): Long-term symptoms
    Traumatic Brain Injury (TBI): Seizures

  • complex partial

  • Seizure Disorders: Partial seizures

  • dental appliances and

  • Systemic Disorders and the Mouth: Neurologic disorders

  • driving and

  • Medical Assessment of the Older Driver: Neurologic disorders

  • drug interactions with

  • Drug-Disease Interactions in the ElderlyTables

  • drug treatment of

  • Drug Treatment of Seizures
    Choice of Drugs for SeizuresTables

  • EEG in

  • Neurologic Diagnostic Procedures: EEG

  • febrile

  • Seizure Disorders: Generalized seizures
    Drug Treatment of Seizures: Drug Choice for Long-Term Treatment
    Febrile Seizures

  • generalized

  • Seizure Disorders: Generalized
    Seizure Disorders: Generalized seizures
    Choice of Drugs for SeizuresTables

  • heatstroke and

  • Heatstroke: Other measures

  • hypomagnesemia and

  • Hypomagnesemia: Treatment

  • jacksonian

  • Seizure Disorders: Partial seizures

  • myoclonic

  • Seizure Disorders: Generalized seizures
    Drug Treatment of Seizures: Drug Choice for Long-Term Treatment
    Choice of Drugs for SeizuresTables

  • neonatal

  • Neonatal Seizure Disorders

  • benign

  • Causes of SeizuresTables

  • nonconvulsive

  • Delirium: Testing

  • occipital lobe

  • Function and Dysfunction of the Cerebral Lobes: Occipital lobes

  • partial

  • Seizure Disorders: Partial seizures
    Manifestations of Partial Seizures by SiteTables
    Choice of Drugs for SeizuresTables

  • petit mal

  • Seizure Disorders: Generalized seizures

  • poisoning and

  • Poisoning: Ongoing supportive measures

  • posttraumatic

  • Seizure Disorders: Posttraumatic seizures

  • pregnancy and

  • Seizure Disorders in Pregnancy
    Preeclampsia and Eclampsia

  • psychogenic (pseudoseizures)

  • Seizure Disorders: Definitions
    Seizure Disorders: Physical examination

  • refractory

  • Seizure Disorders: Surgery

  • salaam

  • Infantile Spasms

  • simple partial

  • Seizure Disorders: Partial seizures

  • syncope vs

  • Syncope

  • temporal lobe

  • Function and Dysfunction of the Cerebral Lobes: Temporal lobes
    Seizure Disorders: Partial seizures

  • tetanus and

  • Tetanus: Management of muscle spasm

  • tonic

  • Seizure Disorders: Generalized seizures

  • tonic-clonic

  • Seizure Disorders: Generalized seizures
    Choice of Drugs for SeizuresTables

    Selective estrogen receptor modulator

    Osteoporosis: Preserving bone mass

    Selective laser trabeculoplasty (SLT)

    Primary Open-Angle Glaucoma: Surgery

    Selective serotonin reuptake inhibitors

  • adverse effects of

  • Depressive Disorders: Drug choice and administration

  • in childhood anxiety disorders

  • SSRIs for Treating Children ≥ 12 YrTables
    Anxiety Disorders in Children and Adolescents: Treatment

  • children and adolescents

  • Depressive Disorders: Selective serotonin reuptake inhibitors (SSRIs)
    Drugs Manifesting Unusual Toxicity in ChildrenTables
    Depressive Disorders in Children and Adolescents: Treatment

  • in depression

  • Depressive Disorders: Selective serotonin reuptake inhibitors (SSRIs)
    Antidepressants Tables

  • drug interactions of

  • Depressive Disorders: Selective serotonin reuptake inhibitors (SSRIs)

  • in elderly

  • Drug Categories of Concern in the Elderly: Antidepressants

  • MAOI contraindication with

  • Depressive Disorders: Monoamine oxidase inhibitors (MAOIs)

  • in obsessive-compulsive disorder

  • Obsessive-Compulsive Disorder (OCD): Treatment

  • in phobic disorders

  • Phobic Disorders: Treatment

  • poisoning with

  • Symptoms and Treatment of Specific Poisons Tables

  • during pregnancy

  • Drugs in Pregnancy: Antidepressants

  • St. John's wort interactions with

  • Some Possible Dietary Supplement–Drug Interactions*Tables

    Selegiline

    Examples of Disorders Associated With Defects in NeurotransmissionTables
    Parkinson Disease: Selective MAO-B inhibitors
    Some Commonly Used Oral Antiparkinsonian DrugsTables

  • in depression

  • Antidepressants Tables

  • poisoning with

  • Symptoms and Treatment of Specific Poisons Tables

    Selenium

    Trace MineralsTables
    Selenium Deficiency and Toxicity

  • deficiency of

  • Symptoms and Signs of Nutritional DeficiencyTables
    Trace MineralsTables
    Selenium Deficiency and Toxicity: Selenium Deficiency

  • poisoning with

  • Symptoms and Treatment of Specific Poisons Tables

  • recommended dietary allowances for

  • Guidelines for Daily Intake of MineralsTables

  • toxicity of

  • Trace MineralsTables
    Selenium Deficiency and Toxicity: Selenium Toxicity

    Self-identity

  • Selfidentity

  • Personality Disorders

    Self-mutilation

    Suicidal Behavior in Children and Adolescents: Self-Injurious Behavior

    Self-neglect

    Behavioral Emergencies
    Self–Neglect in the Elderly

    Sella turcica

    Pituitary Disorders: Empty sella syndrome

    Sellick maneuver

    Airway Establishment and Control: Before intubation

    Semantic dementia

    Frontotemporal Dementia: Primary progressive aphasia

    Semen

    see also Sperm

  • analysis of

  • Male Hypogonadism: Diagnosis of primary and secondary hypogonadism
    Sperm Disorders: Diagnosis
    Semen AnalysisTables

  • blood in

  • Hematospermia

  • insufficiency of

  • Male Sexual Dysfunction: Ejaculatory dysfunction

    Seminoma

    Testicular Cancer

    Semont maneuver

    Benign Paroxysmal Positional Vertigo: Treatment

    Sengstaken-Blakemore tube

    Varices: Treatment
    Mediastinitis: Esophageal perforation

    Senile macular degeneration

    Retinal Disorders

    Senile purpura

    Senile Purpura

    Senna

    Treatment of ConstipationTables

    Sensation

  • dermatomes of

  • Approach to the Neurologic Patient: Sensation
    Sensory dermatomes.Figures

  • evaluation of

  • Approach to the Neurologic Patient: Cranial nerves
    Approach to the Neurologic Patient: Sensation
    Sensory dermatomes.Figures
    Cutaneous nerve distribution: upper limb. Figures
    Cutaneous nerve distribution: lower limb.Figures
    Weakness: Physical examination
    Peripheral Nervous System and Motor Unit Disorders: Clinical evaluation

  • in elderly patient

  • Evaluation of the Elderly Patient: Sensation

  • in multiple sclerosis

  • Multiple Sclerosis (MS): Sensory

    Sensitivity

  • of tests

  • Testing: Sensitivity, specificity, and predictive values

    Sensorineural hearing loss

    see Hearing, loss of

    Sentinel node biopsy

    Breast Cancer: Surgery

    Seoul virus infection

    Arbovirus, Arenavirus, and Filovirus DiseasesTables
    Hantavirus Infection: Hemorrhagic Fever With Renal Syndrome (HFRS)

    Separation anxiety

  • in infant

  • Separation and Stranger Anxiety

    Separation anxiety disorder

    Separation and Stranger Anxiety: Separation anxiety
    Anxiety Disorders in Children and Adolescents: Separation Anxiety Disorder

    Sepsis

    see also Shock, septic
    Sepsis and Septic Shock
    Sepsis in the United StatesTables

  • Burkholderia pseudomallei and

  • Melioidosis: Symptoms and Signs

  • burns and

  • Burns: Systemic

  • central venous catheterization and

  • Vascular Access: Complications

  • gastric

  • Gastritis: Infectious (septic) gastritis

  • HIV infection and

  • Common Manifestations of HIV Infection by Organ SystemTables

  • neonatal

  • Neonatal Sepsis
    Indications for intrapartum antibiotic prophylaxis to prevent perinatal group B streptococcal disease.Figures

  • in premature infant

  • Premature Infant: Infection

  • shock in

  • Shock and Fluid Resuscitation: Distributive shock
    Shock and Fluid Resuscitation: Symptoms and Signs
    Shock and Fluid Resuscitation: Distributive shock
    Sepsis and Septic Shock
    Sepsis in the United StatesTables

  • thrombocytopenia in

  • Thrombocytopenia: Other Causes: Sepsis

    Septic arthritis

    see Arthritis, infectious

    Septicemia

    see Sepsis

    Septo-optic dysplasia

    Brain Anomalies: Septo-optic dysplasia

    Septostomy

    Transposition of the Great Arteries: Treatment
    Tricuspid Atresia: Treatment

    Septum

  • nasal

  • deviation of

  • Septal Deviation and Perforation

  • hematoma of

  • Fractures of the Nose

  • perforation of

  • Septal Deviation and Perforation

    Sequoiosis

    Examples of Hypersensitivity PneumonitisTables

    Serotonin (5-hydroxytryptamine, 5-HT)

    Neurotransmission: Serotonin

  • in autism

  • Examples of Disorders Associated With Defects in NeurotransmissionTables

  • carcinoid secretion of

  • Carcinoid Syndrome: Diagnosis

  • in depression

  • Examples of Disorders Associated With Defects in NeurotransmissionTables

  • in mania

  • Examples of Disorders Associated With Defects in NeurotransmissionTables

    Serotonin modulators

    Depressive Disorders: Serotonin modulators (5-HT2 blockers)
    Antidepressants Tables

    Serotonin-norepinephrine reuptake inhibitors

    Depressive Disorders: Serotonin-norepinephrine reuptake inhibitors
    Antidepressants Tables

    Serotonin-receptor antagonists

    Management of Adverse Effects of Cancer Therapy: Nausea and Vomiting

    Serotonin reuptake inhibitors

    see Selective serotonin reuptake inhibitors

    Serotonin syndrome

    Serotonin Syndrome
    Drugs That Can Cause Serotonin SyndromeTables
    Opioids: Toxicity or overdose

    Serratia marcescens infection

    Hospital-Acquired Pneumonia: Pathogens
    Klebsiella, Enterobacter, and Serratia Infections

    Sertoli cells

    Male Reproductive Endocrinology and Related Disorders: Physiology

    Sertraline

    Depressive Disorders: Selective serotonin reuptake inhibitors (SSRIs)
    Antidepressants Tables

  • in children and adolescents

  • SSRIs for Treating Children ≥ 12 YrTables

  • in elderly

  • Drug Categories of Concern in the Elderly: Antidepressants

  • poisoning with

  • Symptoms and Treatment of Specific Poisons Tables

    Serum sickness

    Some Causes of UrticariaTables
    Types of Drug Reactions and Typical Causative AgentsTables

  • antivenom-induced

  • Snakebites: Antivenom

  • drug-induced

  • Drug Hypersensitivity: Symptoms and Signs
    Drug Hypersensitivity: Desensitization

  • joint pain and

  • Some Causes of Polyarticular Joint PainTables

    Sesamoiditis

    Metatarsalgia: Sesamoiditis

    Sestamibi

    Technetium-99m Myocardial Perfusion MarkersTables

    Sevelamer

    Hyperphosphatemia: Treatment
    Medical Aspects of Long-Term Renal Replacement Therapy: Hyperphosphatemia

    Sever disease

    Disorders Associated With Heel Pain According to LocationTables
    Epiphysitis of the Calcaneus

    Severe acute respiratory syndrome (SARS)

    Community-Acquired Pneumonia: Etiology
    Coronaviruses and Severe Acute Respiratory Syndrome (SARS)

    Severe combined immunodeficiency

    Primary Immunodeficiency Disorders Tables
    Characteristic Clinical Findings in Some Primary Immunodeficiency DisordersTables
    Advanced Laboratory Tests for Immunodeficiency Tables
    Approach to the Patient With Suspected Immunodeficiency: Prognosis
    Severe Combined Immunodeficiency (SCID)

  • gene therapy in

  • Approach to the Patient With Suspected Immunodeficiency: Replacement of missing immune components

    Sewer gas poisoning

    Symptoms and Treatment of Specific Poisons Tables

    Sewer worker's lung

    Examples of Hypersensitivity PneumonitisTables

    Sex chromosomes

    General Principles of Medical Genetics: Structure

  • anomalies of

  • Sex Chromosome Anomalies

    Sex hormone-binding globulin

    Male Reproductive Endocrinology and Related Disorders: Physiology
    Male Reproductive Endocrinology and Related Disorders: Effects of Aging

    Sex-limited (sex-influenced) inheritance

    Factors Affecting Gene Expression: Sex-limited inheritance

    Sex reassignment surgery

    Gender Identity Disorder and Transsexualism: Male-to-female transsexualism

    Sexual abuse

    Medical Examination of the Rape Victim
    Typical Examination for Alleged RapeTables

  • of children

  • Child Maltreatment: Sexual abuse
    Child Maltreatment: Sexual abuse
    Child Maltreatment: Sexual abuse

    Sexual activity

    Sexuality and Sexual Disorders

  • by adolescent

  • Approach to the Care of Adolescents: Sexuality
    Adolescent Development: Sexuality

  • after myocardial infarction

  • Acute Coronary Syndromes (ACS): Activity

  • after pregnancy

  • Postpartum Care and Associated Disorders: Management at Home

  • arousal disorders of

  • in women

  • Sexual Arousal Disorders

  • during pregnancy

  • Approach to the Pregnant Woman and Prenatal Care: Physical activity

  • dysfunction of

  • female

  • Sexual Dysfunction in Women
    Some Physical Factors Contributing to Female Sexual DysfunctionTables
    Components of the Sexual History for Assessment of Female Sexual DysfunctionTables

  • male

  • Male Sexual Dysfunction

  • SSRIs and

  • Depressive Disorders: Selective serotonin reuptake inhibitors (SSRIs)
    Depressive Disorders: Drug choice and administration

  • in elderly

  • Intimacy and the Elderly

  • extramarital

  • Sexuality and Sexual Disorders

  • HIV infection and

  • Human Immunodeficiency Virus (HIV): Transmission
    HIV Transmission Risk of Several Sexual ActivitiesTables
    Human Immunodeficiency Virus (HIV): Prevention of transmission

  • orgasmic disorder of

  • Orgasmic Disorder

  • paraphilic

  • Paraphilias

  • response cycle of

  • female

  • Sexual Dysfunction in Women: Physiology

  • with children

  • Paraphilias: Pedophilia

    Sexual desire/interest disorder

    Sexual Desire/Interest Disorder

    Sexual development

    see also Puberty
    Physical Growth and Sexual Maturation of Adolescents: Sexual Maturation

    Sexual history

    Approach to the Gynecologic Patient: History

    Sexual identity

    Approach to the Care of Adolescents: Sexuality
    Adolescent Development: Sexuality

    Sexually transmitted diseases

    see also specific diseases
    Sexually Transmitted Diseases (STDs)
    Differentiating Common Sexually Transmitted Genital LesionsTables
    Approach to the Gynecologic Patient: Microbiologic testing

  • in children

  • Health Supervision of the Well Child: Other screening tests

  • pregnancy and

  • Risk Factors for Complications During Pregnancy: Sexually transmitted diseases (STDs)

  • rape and

  • Medical Examination of the Rape Victim: Testing and evidence collection
    Medical Examination of the Rape Victim: Prevention of infections

  • reactive arthritis and

  • Reactive Arthritis
    Chlamydial, Mycoplasmal, and Ureaplasmal Infections: Symptoms and Signs

  • vaginitis and

  • Overview of Vaginitis: Diagnosis

    Sézary syndrome

    Chronic Leukemia: Pathophysiology
    Mycosis Fungoides: Diagnosis

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