Why mud baths are considered therapeutic Draw out impurities from the skin. Exfoliate dead skin cells. Relax sore muscles and joints. Improve skin conditions, like eczema and psoriasis. Medical mud can be divided into types depending on physical and chemical properties: Black mud. Dead sea mud. Moor mud. Silt sulphide mud. Sapropelic mud. Peat mud. Hill mud. Irsal e Alaq (Leech or Hirudo therapy) is one of the most important and widely practiced methods of regimental therapy used for local evacuation of morbid.