Hi Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern.
Red Itchy Rash on ankle, can be due to
1.Rashes due to contact with allergic and poisonous agent found in herbs like
poison oak or ivy, or present in the insect’s sting or animal’s bite.
2.
Psoriasis,
impetigo and eczema are few of the diseases that are known to produce rashes or skin eruption.
3. Fungal Infection
Following steps can be taken
1.Maintain hygiene as this is very important in preventing skin eruption. Wash ankles in antiseptic solution. try not touch it
2.Anti allergic medicament can be tried such as
benedryl,
cetrizine.
3.Antifungal cream can be given in case of fungal infection.
If problem persist visit a dermatologist
Hope your query is solved
Get well soon