Hi! you might be suffering from hookworm infestation as your symptoms did not declined after taking antifungal treatment. Hookworm causes cutaneous larva migrans
when the organism travel between the stratum corneum
and stratum basal layer of our skin which is manifested as intense itching and blisters or serpenginous lesion over arms and ankle.secondary bacterial infection may cause worsening of the lesion.
To confirm the diagnosis you should go for stool examination for the egg of hook worm, PCR assay of stool for hookworm DNA in feces.
Hookworm also causes iron deficiency anemia
so you must go for your Hemoglobin estimation.
To remove hookworm infestation you can take albendazole , mebendazole
or ivermectin orally. For the relief of cutaneous symptoms you can use topical antihelminthic thiabendazole or local freezing agents like liquid nitrogen or ethyl chloride .To treat iron deficiency ferrous sulphate
tablets can be taken.
For further prevention you should deworm your pets and should wash your hand properly before each meal.Do not walk bare foot on infected areas.