T78: Adverse effects, not elsewhere classified

The group of conditions classified under the term "Adverse effects, not elsewhere classified," broadly describes various negative health effects that can occur due to drugs, medications, or biological substances that are not categorized in other specific groups. These substances are normally used for therapeutic purposes, like treatment or prevention of illnesses. The adverse effects in this group are highly varied and depend on numerous factors such as the type of substance, the individual's overall health status, genetic factors, or the presence of other diseases. Common symptoms might include nausea, rash, headache, or more severe signs such as breathing difficulties or irregular heart rhythms. It's important to understand that these symptoms don't necessarily imply that the substance is harmful to all individuals, but rather that the affected person has an unusual or exaggerated reaction to it. The progression of these conditions can range from mild transient disorders to potentially severe or life-threatening situations, depending on the specific circumstances.