Hello. Welcome to ask the doctor.
I understand your concern.
Athlete foot is the fungal infection involving feet. The dry patches which you have mentioned may or may not be related to it.
If the patches on your face and back are red colored annular with clear centre covered with scales then they are most likely related to athlete foot.
Else it may be dry discoid eczema.
Treatment depends on the diagnosis.
Visit your doctor so that he can do physical examination and advise you accordingly.
You can share my opinion with him.
I hope it helps.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.