YOU SAID:

How do I cure this rash on my hand?

INTO JAPANESE

私の手でこの発疹を治すためには

BACK INTO ENGLISH

To cure the rash on my hands

INTO JAPANESE

私の手の発疹を治療するには

BACK INTO ENGLISH

To treat the rash on my hands

INTO JAPANESE

私の手に発疹を治療するために

BACK INTO ENGLISH

To treat the rash on my hands