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Is the rash itchy or painful?
How does it look like?
blisters or bumps?
Also any swelling of the leg?
blisters or hard bumps?
also any leg swelling?
curretly is it itchy?
currently is it itchy?
also does he have any visible varicose veins in the legs?
is the rash itchy?
Based on your description so far this sounds like Contact dermatitis.
This means, the skin is reacting against the exposure he had from the fall.
This is akin to eczema but less severe.
The best treatment will be to use a prescription strength steroid cream twice daily.
Triamcinolone acetonide 0.1% cream is a good example.
This should be checked by his doctor or a dermatologist.
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