Porokeratosis is a general term to a group of dermatological problems that occur in various parts of the body. This discussion is limited to punctate porokeratosis. These lesions are described as dozens of discrete or grouped seedlike hyperkeratotic lesions with characteristic thin, raised ridgelike margins that develop on the palms and the soles. Patients

usually have other forms of porokeratosis as well, most commonly the linear or Mibelli types. Because of their description many patients will refer to them as seed corns. This information is from foot-pain-explained.com.

Porokeratosis is a premalignant condition, with certain groups of patients at greatest risk for malignant transformation.

in regard to sense organs, what is punctate distribution?

Erythema is a reddening of the skin and sign of irritation, injury or inflammation. Punctate erythema is a spotted rash, or minute spots.

Punctate foci are 'lesions' on the brain, typically caused by unknown trauma to the brain or conditions where demyelination of brain tissue occurs. Punctate foci are identified by brain MRI, with and without contrast although using contrast normally provides a more accurate picture of all lesions. In layman's terms, punctate foci have also been described as 'popcorn calcifications' in the brain tissue. Some punctate foci are associated with normal aging process.