2838 results
Hair Loss (Alopecia) - General (Diffuse and Focal) Differential Diagnosis Algorithm

DIFFUSE
Scarring - Irreversible-biopsy required
 • Lupus
Hair Loss (Alopecia ... scalp and facial hair ... universalis (all body hair ... • Congenital hair ... Diagnosis #Algorithm #causes
Skin Hypopigmentation - Differential Diagnosis Algorithm

Diffuse Congenital - Generalized hypopigmentation of hair, eyes, skin
 • Phenylketonuria
hypopigmentation of hair ... Diagnosis #Algorithm #causes
Hirsutism - Differential Diagnosis
Defined as excessive dark, coarse, male-pattern hair growth
Hirsutism causes in premenopausal women:
 •
, male-pattern hair ... growth Hirsutism causes ... tumors Hirsutism causes
Kerion
Raised, boggy lesion with heaped up purulent nodules 
Caused by host's response to a fungal ringworm
purulent nodules Caused ... • Painful • Hair
Focal / Localized Hair Loss (Alopecia) - Differential Diagnosis Algorithm

Scarring - Irreversible-biopsy required
 - Infectious
Focal / Localized Hair ... Reversible - Broken Hair ... • Congenital hair ... abnormalities - Hair ... Diagnosis #Algorithm #causes
Polyarteritis Nodosa (PAN): Pathogenesis and Clinical Findings

Medical Comorbidities Malignancies (most commonly hairy-cell leukemia)
Immunogenetic Predisposition: patient is
(most commonly hairy-cell ... Viral replication causes
Pustular Skin Rash - Differential Diagnosis Algorithm
Pruritic / Scaly / Erythematous lesions, usually poorly demarcated
Acneiform -
centered around hair ... thick honey-yellow crusts ... Diagnosis #Algorithm #causes
Lupus (SLE): Mucocutaneous Manifestations

 • Langerhan cells and keratinocytes release cytokines -> localized inflammatory response ->
inflammation onto hair ... follicles -> causes ... Destruction of hair
Tongue Pathology 

Geographic tongue, fissured tongue, and hairy tongue are the most common tongue problems and
fissured tongue, and hairy ... Oral hairy leukoplakia ... immunodeficiency, is caused
Disorders of Pigmentations - Hypopigmentation and Hyperpigmentation - Differential Diagnosis Algorithm

HYPOPIGMENTATION
Diffuse Congenital - Generalized hypopigmentation of
hypopigmentation of hair ... Diagnosis #Algorithm #causes