erythema chroÂ´nicum miÂ´grans a ring-shaped erythema due to the bite of a tick of the genus Ixodes; it begins as an erythematous plaque several weeks after the bite and spreads peripherally with central clearing.
Making self-assessment a success. In order to self-assess effectively, students must have an understanding of the criteria that they gauge their performance against in order to be able to evaluate what makes a piece of work good or poor.aking self-assessment a success. In order to self-assess effectively, students must have an understanding of the criteria that they gauge their performance against in order to be able to evaluate what makes a piece of work good or poor.
Self Assessment is a system HM Revenue and Customs (. ) uses to collect Income Tax. Tax is usually deducted automatically from wages, pensions and savings. People and businesses with other income must report it in a tax return. If you need to send one, you fill it in after the end of the tax year (5 April) it applies to.