The exact causes of<unk>  are unknown. Food allergens may be involved in certain cases. Cases studies have implicated a wide range of foods including tuna, tomato, pineapple, chocolate, coffee, and spices among others. A number of studies have implicated balsam of Peru. A 2013 study found that<unk>  on the hands increased among those allergic to house dust mites, following inhalation of house dust mite allergen. Id reaction and irritant contact dermatitis are possible causes.
Dyshidrosis
Scabies
Hyperhidrosis
Pustular psoriasis
Dysosmia
Anosmia
Hyperesthesia
Carotidynia