In establishing a more accurate 'staging" system for lymphedema, a Lymphedema Grades list has been proposed.
In the grading system, lymphedema can (like stages) be categorized by its severity (usually referenced to a healthy extremity)
- Grade 1 (mild edema): Lymphedema involves the distal parts such as a forearm and hand or a lower leg and foot. The difference in circumference is less than 4 centimeters, and other tissue changes are not yet present.
- Grade 2 (moderate edema): Lymphedema involves an entire limb or corresponding quadrant of the trunk. Difference in circumference is more than 4 but less than 6 centimeters. Tissue changes, such as pitting, are apparent. The patient may experience erysipelas.
- Grade 3a (severe edema): Lymphedema is present in one limb and its associated trunk quadrant. The difference in circumference is greater than 6 centimeters. Significant skin alterations, such as cornification or keratosis, cysts and/or fistulae, are present. Additionally, the patient may experience repeated attacks of erysipelas.
- Grade 3b (massive edema): The same symptoms as grade 3a, except two or moreextremities are affected.
- Grade 4 (gigantic edema): Also known as elephantiasis, in this stage of lymphedema, the affected extremities are huge due to almost complete blockage of the lymph channels. Elephantiasis may also affect the head and face.