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X

Xanthelasma

Etiology: 

Xanthoma

Etiology: 
 

Cause: disorders of lipid metabolism (dyslipidaemias) or occur in histiocytosis

 

Description: soft, yellow or skin colored papules or plaques

 

Location: medial canthus of upper (xanthelasma) 

Xeroderma Pigmentosum (XP)

Etiology: 
 

Cause: autosomal recessive genodermatosis that results due to mutations in nucleotide excision repair (NER)

 

Description: born with normal skin, but with increased sun exposure, the patients develop hyperpigmented and hypopigmented macules 

 

Location: face, neck, chest, and dorsal hands + forearms

Xerosis Cutis

Etiology: 
 

  • Appearance: dry skin

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