Erythema ab igne

Published on 02/04/2015 by admin

Filed under Internal Medicine

Last modified 02/04/2015

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165 Erythema ab igne

Instruction

Examine this patient’s legs.

Examine this patient’s abdomen.

Salient features

History

• Ask the patient whether she exposed the affected area to heat.

Examination

• Reticular erythematous or pigmented rash, usually on the forelegs (or abdomen), known as ‘Granny’s tartan’

Proceed as follows:

• Look for features of hypothyroidism (pulse, ankle jerks).

• Tell the examiner that you would like to proceed as follows:

• measure serum thyroxine and thyroid-stimulating hormone
• investigate for chronic pancreatitis and intra-abdominal malignancy.

Note: If the rash is present over the anterior abdominal wall or lumbar region, it is very likely that there is an intra-abdominal malignancy or chronic pancreatitis.

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