Ichthyosis vulgaris This means that a single mutation would cause a mild case of ichthyosis vulgaris and mutations to both copies of the gene would produce a more severe case. Even though there is no way to cure the disease itself, there are ways to dampen the symptoms. These include medical help in form of pills, and using heavy lotions and oils. To maintain the good health of the skin after the symptoms have dampened the person with the disease are advised to go on normally with their lives but to take precautions while showering. This is to take shorter, colder baths
Supernumerary body part considered to have lost much or all of their original function through evolution. These body parts can be classed as additional to the required functioning of the body. In human anatomy the vermiform appendix is sometimes classed as a vestigial remnant. Prosthesis is an artificial extension that replaces a body part, and cybernetics is the study of computer technology in relation to organisms which can include replacement or additional body parts. Body integrity identity disorder (BIID) is a psychiatric disorder in which a person thinks that they have one or more additional limbs than they should, despite having two arms