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Rashes affecting the lower legs

Author: Dr Amanda Oakley MBChB FRACP, Dept of Dermatology Waikato Hospital, Hamilton, New Zealand, 2004. Reviewed and revised, May 2014.

Dermatitis

Most often, a rash affecting the lower legs is a type of dermatitis. The terms ‘dermatitis’ and ‘eczema’ are often used interchangeably. Acute dermatitis presents as red, swollen and blistered plaques. Chronic dermatitis accompanied by rubbing and scratching results in darkened (hyperpigmented), and thickened (lichenified) plaques.

There are several different types of lower leg dermatitis, which is common at all ages:

Scaly rashes of the lower legs

Scaly conditions affecting the lower legs include:

Infections favouring the lower legs

Redness of the lower legs

Other red or purplish conditions favouring the lower legs include:

Lower leg ulcers

Management of lower leg rashes

Management depends on making a correct diagnosis. General advice should include:

Avoid topical antibiotics, topical antihistamines and multi-ingredient fragranced or herb-containing emollients because of the risk of provoking contact allergy.

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