Mnemoics for Step

Question 1

4 T’s for Type IV hypersensitivity

Answer 1

T- T-cell mediated
T- TB
T-Touching dermatitis (poison ivy)
T - Transplant rejection

Question 2

CATCH 22 for DiGeorge

Answer 2

mnemonic CATCH 22
C- Cardiac defect
A - abnormal facial features
T- Thymic hypoplasia (3rd and 4th pharyngeal pouch absent
C - Cleft palate
H - hypocalcaemia
22- deletion in 22q11.2

Question 3

TIE for Wiskott-Aldrich disease

Answer 3

mnemonic TIE,
 Thromboncytopenia 
recurrent sinopulomary Infections,
Eczema. 
(IgM and IgG levels will be low )

Question 4

ACID for All types of hypersensitivity

Answer 4

A (Type I) - Anaphylaxic and atopic
C - Cytotoxic and antibody
I - Immune complex
D- Delayed T cell mediated

Question 5

PLAIN for Chediak-Higashi syndrome

Answer 5

P- Progressive neurodegeneration
L - Lymphohistiocytosis
A - Albinism (partial)
I - Recurrent pyogenic infections (cocci)
N - Neuropathy