History:

• This is not a nodule.It is soft.If you press it with your finger there is a defect in the underlying skin and your finger falls into it.The only thing similar to it is a very soft neurofibroma in the condition neurofibromatosis.
• Anetoderma can occur with or without any preceding inflammation.
• Other disorders with localised  loss of elastic fibres in the skin include  cutis laxa, mid dermal elastolysis, and granulomatous slack skin.
• A recent paper in JAAD noted a prothrombotic tendency in this condition.