Sandbox: HS

Diseases	Laboratory Findings				Physical Examination				History and Symptoms				Other Findings
Diseases	Lab Test 1	Lab Test 2	Lab Test 3	Lab Test 4	Physical Finding 1	Physical Finding 2	Physical Finding 3	Physical Finding 4	Finding 1	Finding 2	Finding 3	Finding 4	Other Findings
Differential Diagnosis 1			+
Differential Diagnosis 2	↑			-
Differential Diagnosis 3		↓
Differential Diagnosis 4
Differential Diagnosis 5

This table must include the cardinal manifestations of differential diagnosis and the list of diseases must be prioritize based on mortality rate and prevalences of the diseases. For example, if you want to write a differential diagnosis table for heat stroke, sepsis, malignant hyperthermia, neuroleptic malignant syndrome, and serotonin syndrome first, you need to mention the cardinal manifestations for these conditions as, hyperthermia and altered mental status. Second, prioritize your list based on disease mortality or prevalence then, create the table. You can find the example here.


Differential Diagnosis	Similar Features	Differentiating Features

Differential 1	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] also observed in [disease name].	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] that distinguish it from [disease name].
Differential 2	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] also observed in [disease name].	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] that distinguish it from [disease name].
Differential 3	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] also observed in [disease name].	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] that distinguish it from [disease name].
Differential 4	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] also observed in [disease name].	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] that distinguish it from [disease name].
Differential 5	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] also observed in [disease name].	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] that distinguish it from [disease name].

**Ductal hyperplasia**, source:https://librepathology.org


Differential Diagnosis	Differentiating Features

Gynecomastia	Round discrete mass felt under areola and usually bilateral.
Pseudogynecomastia	Increased adipose rather than glandular tissue on examination.
Lipoma	Asymmetric breast enlargement.
Breast cancer	Nipple discharge, Axillary lymphadenopathy, usually nonpainful mass.
Sebaceous cyst	Asymmetric enlargement and swelling feels closer to skin.
Mastitis	Systemic s/s of infection.