Definitive diagnosis of fungal infection is through skin scrapings obtained from the lesions and viewed under the microscope for evaluation. Fungal infection responds well to antifungal medications, however, it takes a long time for this to resolve.
Dyshidrosis or Dyshidrotic Dermatitis, on the other hand, is a skin condition that is characterized by small blisters on the hands or feet. It is an acute, chronic, or recurrent dermatosis of the fingers, palms, and soles, characterized by a sudden onset of many deep-seated pruritic, clear vesicles. Scaling, fissures and lichenification occur later. Recurrence is common and for many can be chronic.
Avoidance of known triggers, zinc oxide ointment, nickel-free diets, stress management counseling, light treatment, salt soaks and topical steroids may help. Different people respond to different treatments. However, if it still persists, it would be best to have it evaluated further by your dermatologist for proper management.
Take care and keep us posted.