Differential Diagnosis > Distribution > Scalp

Scalp

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hmtoggle_plus1Purple Plum (friable nodule) on Elderly Scalp
•Atypical Fibroxanthoma
•SCC/ BCC
•Amelanotic Melanoma
•angiosarcoma
•Merkel Cell tumor
•metastasis

 
Common metastases to scalp:

 

hmtoggle_plus1Scaly scalp ddx:
•Seborrheic dermatitis
•Sebopsoriasis
•Darier’s disease
•Tinea capitis

 
Other:

•Brunsting-Perry
•scalp pustules - think acne miliaria necrotica
•erosive pustular dermatosis of the scalp