Painful erythematous papules and nodules involving either the palms of the
hands, or, mole commonly, the soles of the feet, characterize palmoplantar
eccrine hidradenitis or palmoplantar hidradenitis (PH), The younger pediatr
ic population is predominately affected. Histologically, the eccrine gland
apparatus is the target of inflammatory neutrophilic infiltrates. This enti
ty has been reported under a variety of names, including traumatic plantar
urticaria, neutrophilic eccrine hidradenitis, plantar erythema nodosum, and
idiopathic recurrent palmoplantar hidradenitis, All are essentially the sa
me process, described in different forms, Despite the growing number of rep
orted cases, the pathogenesis remains obscure.
We present four children with PH of the soles of the feet, who shared a com
mon recent history of exposure to cold, damp, footwear. The temporal relati
onship between exposure to dampness and cold and the appearance of the skin
lesions suggest a possible pathogenetic mechanism.