Advanced Pathophysiology and Clinical Management of HIV/AIDS,
Autoimmune Disorders, Hypersensitivity Reactions, Endocrine Dysfunctions,
and Metabolic Diseases: Comprehensive Examination Covering CD4+ T-Cell
Depletion, Opportunistic Infections, Rheumatoid Factor, Immune Complex
Deposition, Systemic Lupus Erythematosus, IgE-Mediated Hypersensitivity,
Anaphylaxis, Complement Activation, Delayed T-Cell Responses, Parathyroid
Hormone Regulation, Calcium Homeostasis, Hyperthyroidism, Graves’
Disease, Hypothyroidism, Hashimoto’s Thyroiditis, Adrenal Insufficiency,
Addison’s Disease, Cushing’s Syndrome, Antidiuretic Hormone Imbalance,
Diabetes Insipidus, SIADH, Pancreatic Beta-Cell Destruction, Insulin
Resistance, Hyperglycemia, Hypoglycemia, Diabetic Ketoacidosis,
Autoimmune Pathogenesis, Inflammatory Cytokines, Immune Dysregulation,
Hormonal Feedback Mechanisms, Metabolic Complications, and Clinical
Diagnostic Exam Questions Verified and Provided with Complete A+ Graded
Rationales Latest Updated 2026
What is the pathophysiology of HIV/AIDS?
RNA (retro) virus, transmitted by blood/body fluids, affects CD4+ (helper) T cells, CD4+ T cell
level will eventually drop so low opportunistic diseases develop
What is the pathophysiology of Rheumatoid Arthritis?
Autoimmune disease with unknown cause. Genetic susceptibility with onset following exposure
to an environmental trigger, abnormal IgG is produced, abnormal antibodies against the
abnormal IgG are produced (called rheumatoid factor), Rheumatoid factor combines with the
abnormal IgG. These immune complexes are deposited on synovium tissue, complement and
the inflammatory response are activated, tissue is damaged from chronic exposure to
inflammatory process
,What is the pathophysiology of Systemic Lupus Erythematosus?
genetic susceptibility with onset following exposure to an environmental trigger, autoantibodies
are directed against components of patient's own cell nucleic acids, autoimmune complexes are
deposited in basement membranes of capillaries causing chronic inflammation which damages
tissue, commonly affects kidneys, skin, heart, joints, lungs, nervous system
What is the pathophysiology of autoimmunity?
1. genetic predisposition
2. environmental trigger (infection, medication)
3. Immune system attacks self antigens
What are examples of autoimmunity?
1. rheumatoid arthritis
2. systemic lupus erythematosus
3. type 1 diabetes
4. grave's disease
5. hypothyroidism
6. celiac disease
7. Addison's disease
8. Inflammatory bowel disease
What is the pathophysiology of a type 1 hypersensitivity reaction?
,1. first exposure to antigen: production of IgE antibodies, bind to mast cells and basophils
2. Subsequent exposure to antigen: antigen and IgE link, cells degranulate, chemical mediators
released (histamine, serotonin, leukotrienes)
What are examples of a type 1 hypersensitivity reaction?
allergic rhinitis, asthma, atopic dermatitis
What are signs and symptoms of a type 1 hypersensitivity reaction?
1. Local: wheal and flare
2. Atopic reactions: sneezing and runny nose, wheezing (asthma), hives, angioedema, nausea,
vomiting, diarrhea, atopic dermatitis
3. Systemic: anaphylaxis
What is the pathophysiology of a type II cytotoxic and cytolytic hypersensitivity reaction?
1. IgG or IgM antibodies bind to an antigen on a cell surface
2. The complement system is activated
3. Tissue is destroyed by:
*cell lysis from complement activation
*enhanced phagocytosis
What are examples of a type II cytotoxic and cytolytic hypersensitivity reaction?
1. Hemolytic transfusion reaction
2. Goodpasture syndrome
, What are signs and symptoms of a type II hemolytic reaction?
hypotension
tachycardia
fever
flank pain
blood in urine
What are signs and symptoms of a type II goodpasture syndrome reaction?
pulmonary hemorrhage
glomerulonephritis
What is the pathophysiology of a Type IV delayed hypersensitivity reaction?
1. cell mediated response
2. sensitized T cells attack antigens or release cytokines
3. Macrophages go to the area and release enzymes
4. Tissue is damaged
What are examples of a type IV delayed hypersensitivity reaction?
1. contact dermatitis
2. Tuberculosis (TB)
Autoimmune Disorders, Hypersensitivity Reactions, Endocrine Dysfunctions,
and Metabolic Diseases: Comprehensive Examination Covering CD4+ T-Cell
Depletion, Opportunistic Infections, Rheumatoid Factor, Immune Complex
Deposition, Systemic Lupus Erythematosus, IgE-Mediated Hypersensitivity,
Anaphylaxis, Complement Activation, Delayed T-Cell Responses, Parathyroid
Hormone Regulation, Calcium Homeostasis, Hyperthyroidism, Graves’
Disease, Hypothyroidism, Hashimoto’s Thyroiditis, Adrenal Insufficiency,
Addison’s Disease, Cushing’s Syndrome, Antidiuretic Hormone Imbalance,
Diabetes Insipidus, SIADH, Pancreatic Beta-Cell Destruction, Insulin
Resistance, Hyperglycemia, Hypoglycemia, Diabetic Ketoacidosis,
Autoimmune Pathogenesis, Inflammatory Cytokines, Immune Dysregulation,
Hormonal Feedback Mechanisms, Metabolic Complications, and Clinical
Diagnostic Exam Questions Verified and Provided with Complete A+ Graded
Rationales Latest Updated 2026
What is the pathophysiology of HIV/AIDS?
RNA (retro) virus, transmitted by blood/body fluids, affects CD4+ (helper) T cells, CD4+ T cell
level will eventually drop so low opportunistic diseases develop
What is the pathophysiology of Rheumatoid Arthritis?
Autoimmune disease with unknown cause. Genetic susceptibility with onset following exposure
to an environmental trigger, abnormal IgG is produced, abnormal antibodies against the
abnormal IgG are produced (called rheumatoid factor), Rheumatoid factor combines with the
abnormal IgG. These immune complexes are deposited on synovium tissue, complement and
the inflammatory response are activated, tissue is damaged from chronic exposure to
inflammatory process
,What is the pathophysiology of Systemic Lupus Erythematosus?
genetic susceptibility with onset following exposure to an environmental trigger, autoantibodies
are directed against components of patient's own cell nucleic acids, autoimmune complexes are
deposited in basement membranes of capillaries causing chronic inflammation which damages
tissue, commonly affects kidneys, skin, heart, joints, lungs, nervous system
What is the pathophysiology of autoimmunity?
1. genetic predisposition
2. environmental trigger (infection, medication)
3. Immune system attacks self antigens
What are examples of autoimmunity?
1. rheumatoid arthritis
2. systemic lupus erythematosus
3. type 1 diabetes
4. grave's disease
5. hypothyroidism
6. celiac disease
7. Addison's disease
8. Inflammatory bowel disease
What is the pathophysiology of a type 1 hypersensitivity reaction?
,1. first exposure to antigen: production of IgE antibodies, bind to mast cells and basophils
2. Subsequent exposure to antigen: antigen and IgE link, cells degranulate, chemical mediators
released (histamine, serotonin, leukotrienes)
What are examples of a type 1 hypersensitivity reaction?
allergic rhinitis, asthma, atopic dermatitis
What are signs and symptoms of a type 1 hypersensitivity reaction?
1. Local: wheal and flare
2. Atopic reactions: sneezing and runny nose, wheezing (asthma), hives, angioedema, nausea,
vomiting, diarrhea, atopic dermatitis
3. Systemic: anaphylaxis
What is the pathophysiology of a type II cytotoxic and cytolytic hypersensitivity reaction?
1. IgG or IgM antibodies bind to an antigen on a cell surface
2. The complement system is activated
3. Tissue is destroyed by:
*cell lysis from complement activation
*enhanced phagocytosis
What are examples of a type II cytotoxic and cytolytic hypersensitivity reaction?
1. Hemolytic transfusion reaction
2. Goodpasture syndrome
, What are signs and symptoms of a type II hemolytic reaction?
hypotension
tachycardia
fever
flank pain
blood in urine
What are signs and symptoms of a type II goodpasture syndrome reaction?
pulmonary hemorrhage
glomerulonephritis
What is the pathophysiology of a Type IV delayed hypersensitivity reaction?
1. cell mediated response
2. sensitized T cells attack antigens or release cytokines
3. Macrophages go to the area and release enzymes
4. Tissue is damaged
What are examples of a type IV delayed hypersensitivity reaction?
1. contact dermatitis
2. Tuberculosis (TB)
