33 results
Type IV Hypersensitivity: Pathogenesis and clinical findings
Definition: Unique because it is entirely T-Cell mediated; exposure to
Allergic reaction ... Particular CD4+ Th cells ... harmful -> Th Cells ... macrophages, mast cells ... #Immunology #pathophysiology
Type I Hypersensitivity: Pathogenesis and clinical findings
Definition: Production of lgE Antibodies that bind to harmless allergens
and induce mast cell ... plasma cells that ... complexes bind to mast cells ... • Inflammatory cells ... #Immunology #pathophysiology
Bell's Phenomenon on Physical Exam

Carles Bell realized that when trying to close the eye on the
Bell's Phenomenon ... neurologiabr #Bells ... #Phenomenon #Sign ... clinical #video #PhysicalExam ... ophthalmology #neurology
Bell's palsy
There are many different causes of Facial Nerve Palsy. However, the commonest
cause of unilateral facial
Bell's palsy There ... variety known as Bell's ... - Ptosis #Bells ... #Palsy #Neurology ... #Signs #Symptoms
Type II Hypersensitivity: Pathogenesis and clinical findings
Definition: When antigens bind to the body's cell surfaces, forming
surfaces of body cells ... -> B-Cells with ... foreign -> B-cells ... HypersensitivityReaction #Allergy ... #Immunology #pathophysiology
X-Linked Agammaglobulinemia: Pathogenesis and clinical findings
The epidemiology of this disease is 1/340,000 births and roughly double
Signs of immunodeficiency ... maturation of B cells ... from precursor cells ... humoral immunity Signs ... CD19+) and plasma cells
Bell's Sign on Physical Exam

The clinical sign resulting from functional insufficiency of the eyelid orbicularis was
Bell's Sign on Physical ... The clinical sign ... name known as Bell's ... sign. ... semiologianeurologica #Bells
Bell's Phenomenon

Sign of peripheral facial paralysis manifested by eye movement up and out of the eyeball,
Bell's Phenomenon ... Sign of peripheral ... the eyelid #Bells ... clinical #video #physicalexam ... #neurology #CN7
Features of a Sickle Cell Crisis 
Sickle-cell disease - an autosomal recessive blood disorder.
Characterized by red
Characterized by red blood cells ... These cells can ... The underlying pathophysiology ... sequestration of sickle cells ... Crisis #Features #Signs
Retinoblastoma: Pathogenesis and clinical findings
 • Sporadic mutation -> One allele of RB1 tumor suppressor gene
mutated in one cell ... mutated in all cells ... Retinoblastoma Signs ... Retinoblastoma #pathophysiology ... ophthalmology #diagnosis #signs