Hyperkeratosis of the Heels: Treatment With Salicylic Acid in a Novel Delivery System

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Abstract
A 43-year-old woman presented with dryness and scaling of the lateral and posterior aspects of both heels, which was diagnosed as hyperkeratotic xerosis (Figure 1). Pertinent medical history included dry skin with winter exacerbation and painful hyperkeratosis of the heels present for many years. The patient applied a topical multivesicular cream formulation of 6% salicylic add (Salex, Healthpoint Ltd., Fort Worth, TX) to one foot b.i.d. The physician was blinded as to which foot was treated. After 2 weeks of treatment, it was apparent that the patient was applying the cream to the right foot, as evidenced by reduced dryness, scaling, and hyperkeratosis (Figure2). The patient continued treatment of the same foot for an additional 2 weeks, revealing a dramatic improvement of the right heel,which appeared smooth and soft and devoid of pain. No irritation was associated with treatment; the patient commented that this was the best her heel had been "in years." Subsequently, the patient treated both heels with salicylic acid 60%, multivesicular cream. A second patient, a 25-year-old woman, was treated for ichthyosis vulgaris and hyperkeratosis of both heels. She presented w ith multiple painful fissures and hyperkeratosis of the posterior heels bilaterally (Figure 3). After I week of topical treatment with salicylic add 6%, multivesicular cream applied b.i.d. to the left heel only, there was rapid resolution of both hyperkeratosis and pain (Figure 4).

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