Final answer:
Pre-eclampsia involves pathogenesis with a possible Pre-renal group, clinical symptoms such as breathlessness and edema, and severe features that require immediate attention.
Step-by-step explanation:
The three aspects of Pre-eclampsia include pathogenesis, clinical presentation, and severe features.
Pathogenesis
The pathogenesis of pre-eclampsia can be categorized into Pre-renal, as one of the three groups. In the Pre-renal category, the kidneys themselves are not inherently defective. Instead, complications such as increased intra-abdominal pressure or congestive cardiac failure can lead to secondary effects, such as the excretion of protein in urine, which is a hallmark of Pre-eclampsia.
Clinical Presentation
For women of child-bearing age, the clinical symptoms of Pre-eclampsia may include breathlessness upon exertion, giddiness, and pallor of the skin. Additionally, in severe cases, patients may display edema of the ankles as part of the clinical presentation.
Severe Features
The severe features mentioned in the question might refer to serious complications or significant manifestations associated with Pre-eclampsia that necessitate immediate medical attention. However, as the specifics are not provided, it is important to consult up-to-date medical resources to understand these features in the context of current medical standards.