Tetter is a skin condition that commonly results in red, itchy, and scaly rashes. This condition can be caused by different factors such as genetics, environmental irritants, and infections. The good news is that there are several synonyms for the word tetter, and these can help to clear up any confusion surrounding the condition. Some of the synonyms include eczema, dermatitis, psoriasis, hives, and urticaria. Each of these terms describes a particular type of skin rash with different underlying causes. It is important to consult a dermatologist for an accurate diagnosis and treatment plan.