The phrase "aggressive illness" is correct and usable in written English.
It can be used to describe a disease or condition that progresses rapidly and has severe effects on the patient.
Example: "The patient was diagnosed with an aggressive illness that required immediate treatment to improve their chances of survival."
Alternatives: "rapidly progressing disease" or "severe illness".
His ex-wife, Monique, ruminates about their once happy marriage even as she quietly battles an aggressive illness.
Moore said he did not want to think too far ahead, a philosophy he said was shaped by his wife's courage in the face of an aggressive illness, and by dealing with his own grief at her loss.
Moreover, the insidious cancers have that infected those who were alive during the Trinity detonation have forever altered genetics, transmitting susceptibility to this aggressive illness to future generations.
The rhodesiense form of sleeping sickness, that affects communities in Eastern Africa, is a more aggressive illness, which rapidly progresses to the meningo-encephalitic stage [3] and accounts for less than 5% of all HAT cases [4].
Meningococcal disease is a sudden, aggressive illness that can lead to death within 24 hours of onset.
Though certainly not appreciating this nasty and aggressive illness, he was fascinated by its complexities and the therapeutic uncertainties, right up until the day of his death.
Another is that it could be chosen by patients just as they're most susceptible to depression while they're fighting aggressive illnesses.
Obviously, for those suffering from aggressive illnesses, that wait time is unacceptable.
By doing so, he's not only showing the kind of courage we should all aspire to possess -- he's also inspiring countless others who are fighting or know someone fighting aggressive illnesses, giving them roadmaps to resilience, guidelines for refusing to give in.
"I personally suspect that the exposure to electromagnetic fields in the home and the microwaves from cell phone radiation are driving the virulence of many of the microbes that are naturally in us, and makes them aggressive and illness producing," said Dr. Klinghardt, well known for his successful treatment of neurological illness using integrative medicine.
"I think it's more aggressive than the illness I had, it's something that has to be dealt with pretty quickly and it's [a case of] going straight on to chemotherapy and getting into a routine.
