Diseases

Here are the various diseases which are the causes of symptoms addressed in Diagnosis123, arranged by organ systems. Some of them are cross-referenced (duplicated).

Abdomen
Abdominal Aortic Aneurysm (AAA)
Abdominal Muscle Strain
Acute Gastroenteritis
Appendicitis
Ascites
Bowel Ischemia
Bowel Obstruction
Celiac Disease
Cirrhosis
Colon Cancer
Constipation (as cause of abdominal pain)
Crohn’s Disease
Dyspepsia
Fatty Liver
Gallbladder Disease
Gastric Cancer
Gastritis
Gastro-Esophageal Reflux
Hepatitis, Acute
Hepatitis — Differences Among the Viruses
Inflammatory Bowel Disease
Irritable Bowel Syndrome (IBS)
Ischemic Bowel
Lactose Intolerance
Liver Failure – Acute
Malabsorption Syndromes
Mesenteric Venous Thrombosis
Peritonitis
Ovarian Disease (as cause of abdominal pain)
Pancreatitis
Polyps (bowel)
Post-Cholecystectomy Syndrome
Pyelonephritis
Staphylococcal Food Poisoning
Stomach Cancer
Stomach Ulcer
Ulcer
Ulcerative Colitis

Ear-Nose-Throat
Adenoid Enlargement
Allergies (“Hay Fever”)
Common Cold
Covid-19
Eustachian Tube Dysfunction
Foreign Body — Nose
Mastoiditis
Nasal Furuncle
Nasal Septum Problems
Oral Infections (deep)
Peritonsillar Abscess
Otitis Externa
Otitis Media (middle ear infection)
Polyps (Nasal)
Rhinitis Medicamentosa
Sinusitis
Strep Throat
Tularemia
TMJ Disorder
Upper Airway Obstruction
Viral Sore Throat (Pharyngitis)



Endocrine
Adrenal Insufficiency (Addison’s Disease)
Diabetes
Diabetic Autonomic Neuropathy
Diabetic Ketoacidosis
Hyperthyroidism
Hypothyroidism
Pheochromocytoma
Pituitary Insufficiency
Thyroid Diseases





Eye
“Pink Eye” — Conjunctivitis
Allergic Conjunctivitis (airborne)
Allergic Conjunctivitis (contact)
Bacterial Conjunctivitis
Chlamydial Conjunctivitis
Gonorrheal Conjunctivitis
Herpes Conjunctivitis
Viral Conjunctivitis
Corneal Abrasion / Foreign Body
Episcleritis
Foreign Body — Conjunctiva
Glaucoma
Iritis / Uveitis
Keratitis
Optic Neuritis
Pterygium
Scleritis
Subconjunctival Hemorrhage
Uveitis



Gynecology
Breast Diseases
Ectopic Pregnancy
Endometritis (uterine infection)
Fibroids (of the Uterus)
Miscarriage
Mittelschmerz / Dysmenorrhea (menstrual pains)
Ovarian Disease (as cause of abdominal pain)
Pelvic Inflammatory Disease (P.I.D.)
Tubal Infection (PID)
Uterine Infection (Endometritis)



Heart
Angina Pectoris
Atrial Fibrillation (“A. Fib”)
Chest Wall Pain
Coronary Artery Disease
Endocarditis
Heart Attack (Myocardial Infarction)
Heart Failure
Hypertension (High Blood Pressure)
Myocarditis
Pericarditis
Rib Fracture (without trauma)
Shock
Spontaneous Coronary Artery Dissection (SCAD)
Thoracic Aortic Aneurysm



Hematology (Blood and Blood Vessels)
Anemia
Anemia – Acute
Deep Venous Thrombosis
Hypertension (High Blood Pressure)
Neutropenia
Sepsis
Shock
Thrombophlebitis
Venous Thrombosis
Vitamin B12 Deficiency

Immune System
Acquired Immunodeficiency Syndrome (AIDS)
Acute (Primary) HIV
Allergies (“Hay Fever”)
Anaphylaxis
Chronic Fatigue Syndrome
HIV Disease
HIV — Acute
Lupus (SLE)
Sarcoidosis
Scleroderma
Systemic Lupus Erythematosus (SLE, Lupus)



Infections
Abscesses
Acquired Immunodeficiency Syndrome (AIDS)
Acute HIV
Brain Infections
Bronchitis — Acute
Cellulitis
Chlamydia
Common Cold
Covid-19
Diphtheria
Endocarditis
Gonorrhea
Herpes Simplex (Types 1 and 2)
Herpes Zoster (Shingles)
HIV Disease
HIV — Acute
Influenza (& other viruses)
Lyme Disease
Mononucleosis
Rabies
Sepsis
Septic Arthritis
Shingles (Herpes Zoster)
Staphylococcal Food Poisoning
Syphilis
Tularemia
Tuberculosis (TB)
Zoster (Shingles)



Kidney & Urinary
Cystitis (UTI)
Interstitial Cystitis / Bladder Pain Syndrome
Kidney (Renal) Failure
Kidney Infarction
Kidney Infection
Kidney Stones
Pyelonephritis
Testicular Disease
Urethritis
Urinary Tract infection (UTI; Cystitis)


Lungs
Asthma
Bronchitis — Acute
COPD
Covid-19
Foreign Body Aspiration
Hypersensitivity Pneumonitis
Influenza (& other viruses)
Interstitial Lung Disease (ILD)
Lung Cancer
Pertussis (“Whooping Cough”)
Pleurisy / Pleuritis
Pneumonia
Pneumothorax
Pulmonary Embolism
Shortness of Breath – Uncommon Causes
Sleep Apnea
Tracheitis (“Croup” in children < 3 y.o.)
Tuberculosis (TB)
Upper Airway Obstruction



Musculoskeletal & Rheumatology
Abdominal Muscle Strain
Avascular Necrosis (Hip)
Behรงetโ€™s Syndrome
Bone Disease
Chest Wall Pain
Fibromyalgia
Gout
Herniated Disk
Lupus (SLE)
Osteoarthritis
Pseudogout
Psoriatic Arthritis
Raynaud’s Phenomenon
Reactive Arthritis
Rheumatic Fever
Rheumatoid Arthritis
Rheumatologic Conditions (rare)
Rib Fracture (without trauma)
Scleroderma
Scoliosis
Septic Arthritis
Sjรถgren’s Syndrome
SLE (Lupus)
Spinal Cord Diseases
Spinal Stenosis
Strains / Sprains
Systemic Lupus Erythematosus (SLE, Lupus)



Neurology
AIDS-Related Brain Diseases
Bell’s Palsy (Facial Palsy)
Brain Infections
Cluster Headache
Concussion / Post-Concussive Syndrome
Delirium
Diabetic Autonomic Neuropathy
Epidural Hematoma
Head Trauma (Minor)
Idiopathic Intracranial Hypertension xxx(I.I.H.)
Increased Intracranial Pressure
Medication Overuse Headache
Meningitis
Migraine Headache
Mild Cognitive Impairment
Multiple Sclerosis
Parkinson’s Disease
Stroke and TIA
Tension Headache
Vitamin B12 Deficiency


Psychiatry
Anxiety
Bipolar Disorder
Depression
Psychosis
Schizophrenia
Somatization Disorder


Various
Cancer
Carbon Monoxide Poisoning
Chronic Fatigue Syndrome
Sarcoidosis
Sleep Apnea
Vitamin B12 Deficiency


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