Background
STE (a temporary moniker) is presumed to be a viral infection, the advent of which is sometimes referred to as the "expandemic".The virus is rapidly absorbed through mucosal membranes, including the mouth, nose, lungs, eyes, stomach, vagina, urethra, and intenstinal walls. The latent period of the virus is approximately 12 hours, after which STE is communicable, and symptoms begin after approximately 24 hours, when stage 1 begins. The rapid onset of symptoms, desirability of many symptoms, and nature by which symptoms spread the disease make STE a significant public health concern. Patients are contagious indefinitely unless the virus successfully reaches dormancy.
Stage 1
Colloquially known as the "horny phase". In which libido is massively increased.
Arousal Persistence
Once arousal is reached, it becomes nearly impossible to subdue sexual urges via force of willpower alone, and will subside upon successful climax. However, a phenomenon referred to as the "libido avalanche" causes sexual gratification to increase libido further, due to an as-of-yet unrecognized hormonal process, causing a positive feedback loop ever-increasing libido. Breast tenderness and increased sensitivity of erogenous zones are common.
The most significant danger of STE is the libido avalanche intensifying symptoms of stage 2 and stage 3, and causing permanent changes to one's body. This is most significant in regards to Rapid Expansion Scenarios (RESes, which are detailed in the section regarding stage 3). If patients can avoid sexual stimulation entirely, be it intercourse with another or masturbation, during the first couple of stages, the majority of symptoms can be mitigated. It is important to note that sexual excitement (specifically the plateau phase) is just as dangerous as sexual climax, if not more, since it seems to contribute increasingly to the libido avalanche effect over time, and this process can last indefinitely, terminated only by climax, loss of consciousness, severe discomfort, or other extreme circumstances, given the difficulties in reducing arousal in patients with STE.
Safety
Those infected with STE are advised to stay away from electronic devices and social engagements in case of sexual temptation, as the first few orgasms are paramount to avoid. Working from home and remote learning, if possible, are strongly recommended. Thick, loose-fitting, modest clothing is recommended as well to prevent accidental physical stimulation. Ice baths have been successfully used to quell sexual urges, and research is currently being undergone for pharmaceutical intervention. In the most serious of cases, patients will forgo responsibilities entirely in search of sexual gratification.
Stage 2
Colloquially known as the "wet phase". Symptoms are intensified by increased libido avalanche.
The "Wet Phase "
Stage 2 is most obvious in biological females, where a marked increase in vaginal lubrication occurs, whereas biological males will notice a massive increase (typically 2000% to 8000%, but outliers have been observed) in semen volume, as well as increase in muscle tone.