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Differential Diagnosis For Follicular hyperkeratosis

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List of current finding(s):

Deficiency Disorders
Avitaminosis A
Hypovitaminosis A
Hereditary, Familial, Genetic Disorders
Keratosis follicularis (Darier Disease)
Ullrich Muscular Dystrophy
Idiopathic, Unclassified Disorders
Pityriasis rubra pilaris
Synonyms
DAR, DARIER DIS, DARIER DISEASE, DARIERS DIS, Dariers Disease, Darier's Disease, Darier-White disease, DD, Disease Darier, Disease Darier's, Dyskeratosis follicularis, Follicular keratosis, follicularis keratosis, Heredit follicular keratosis, Hereditary follicular keratosis, Keratosis follicular, KERATOSIS FOLLICULARIS, Keratosis follicularis (disorder), Psorosperm follicularis veget, Psorospermosis, PSOROSPERMOSIS FOLLICULARIS, Psorospermosis follicularis vegetans, WHITE-DARIER DISEASE
Definition

Follicular hyperkeratosis

Type I follicular hyperkeratosis consists of lesions that feel spiky to the touch, consisting of multiple horny dry papules. They are most commonly seen on the backs of the arms. On close inspection they are seen to arise from the hair follicles. This condition is associated with a deficiency of vitamin A and possibly also of riboflavin.

Type II follicular hyperkeratosis is similar in appearance and occurs commonly on the trunk or thighs. The surrounding skin is less dry, and the mouths of the hair follicles are seen to contain brown-pigmented denatured blood. This condition is possibly caused by vitamin C deficiency.

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External Links Related to Follicular hyperkeratosis
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PubMed (National Library of Medicine)
NGC (National Guideline Clearinghouse)
Medscape (eMedicine)
Harrison's Online (accessmedicine)
NEJM (The New England Journal of Medicine)
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