36 results
Disorders of Pigmentations - Hypopigmentation and Hyperpigmentation - Differential Diagnosis Algorithm

HYPOPIGMENTATION
Diffuse Congenital - Generalized hypopigmentation of
Pigmentations - Hypopigmentation ... and Hyperpigmentation ... Acquired • Tinea versicolor ... HYPERPIGMENTATION ... Melasma • Tinea versicolor
Skin Hypopigmentation - Differential Diagnosis Algorithm

Diffuse Congenital - Generalized hypopigmentation of hair, eyes, skin
 • Phenylketonuria
Skin Hypopigmentation ... - Generalized hypopigmentation ... Acquired • Tinea versicolor ... Post-inflammatory hypopigmentation ... #Hypopigmentation
Skin Hyperpigmentation - Differential Diagnosis Algorithm
Diffuse:
 • Tanning
 • Adverse cutaneous drug eruption
 • Addison's disease
Skin Hyperpigmentation ... Melasma • Tinea versicolor ... Post-Inflammatory hyperpigmentation ... #Hyperpigmentation
Common Dermatological Conditions - Distribution and Morphology
 • Acne vulgaris - Face, upper back, chest -
background of hyperpigmentation ... scale • Tinea versicolor
Tinea Versicolor (Pityriasis versicolor) 
NOT a dermatophyte infection 
Caused by saprophytic, lipid-dependent yeasts 
Clinical 
 •
Tinea Versicolor ... (Pityriasis versicolor ... recalcitrant) #Tinea #Versicolor
Tinea Versicolor: Scaly well demarcated patches caused by fungal skin infection.

Charlie Goldberg, M.D. - UCSD Catalog
Tinea Versicolor ... SkinRash #Tinea #Versicolor
Cutaneous signs of Addison's disease may be a useful clue. Hyperpigmentation especially involves sun-exposed areas and
Hyperpigmentation ... often have patchy hyperpigmentation ... flexural on oral hyperpigmentation
Tinea Versicolor - Physical examination revealed large, coalescing, hypopigmented patches and macules on her torso and
Tinea Versicolor ... Pathology #Tinea #Versicolor
Generalized Hyperpigmentation Differentials
Use the Mnemonic "no skin SPARED"

Images from dermnet.nz and merckmanuals

Mnemonic from https://www.medscape.com/slideshow/dermatology-mnemonics-6011359#5 #diagnosis #differential
Generalized Hyperpigmentation
Nevus of Ota on Ocular Exam (Ocular Dermal Melanosis)

Benign melanosis in the distribution of the trigeminal
with associated hyperpigmentation