In people either older or younger E. coli is the most common bacterial infection. Treatment involves the use of antibiotics. Fourniers gangrene
Fourniers gangrene (an aggressive and rapidly spreading infection of the perineum) usually presents with fever and intense pain. It is a rare condition but fatal if not identified and aggressively treated with a combination of surgical debridement and broad spectrum antibiotics. Others
Many other less common conditions can lead to testicular pain. These include inguinal hernias, injury, hydroceles, degenerative disease of lumbar spine, disc herniations, and varicoceles among others. Testicular cancer is usually painless. Another potential cause is epididymal hypertension (also known as "blue balls"). Diagnostic approach
Physical findings
The cremaster reflex (elevation of the testicle in response to stroking the upper inner thigh) is typically present in epididymitis but absent in testicular torsion as the testis is already elevated. Prehns sign (the relief of pain with elevation) though a classic physical exam finding has not been found to be reliable in distinguishing torsion from other causes of testicular pain such as epididymitis. Laboratory tests
Useful tests that may help in the determination of the cause include a urinalysis (usually normal in testicular torsion). Pyuria and bacteriuria (white blood cells and bacteria in the urine) in patients with acute scrotum suggests an infectious cause such as epididymitis or orchitis and specific testing for gonorrhea and chlamydia should be done. All people with chronic pain should be tested for gonorrhea and chlamydia. Imaging
Ultrasound is useful if the cause is not certain based on the above measures.
Steroid diabetes does not occur with other steroid hormones, such as anabolic steroids or sex steroids because these other categories of steroids have actually shown to have positive effects on glucose metabolism. Criteria
The diagnostic criteria for steroid diabetes are those of diabetes (fasting glucoses persistently above 125 mg/dl (7 mM) or random levels above 200 mg/dl (11 mM)) occurring in the context of high-dose glucocorticoid therapy. Insulin levels are usually detectable, and sometimes elevated, but inadequate to control the glucose. In extreme cases the hyperglycemia may be severe enough to cause nonketotic hyperosmolar coma. Treatment
Treatment depends on the severity of the hyperglycemia and the estimated duration of the steroid treatment. Mild hyperglycemia in an immunocompetent patient may not require treatment if the steroids will be discontinued in a week or two. Moderate hyperglycemia carries an increased risk of infection, especially fungal, and especially in people with other risk factors such as immunocompromise or central intravenous lines. Insulin is the most common treatment. Further reading
Fresh insights into glucocorticoid-induced diabetes mellitus and new therapeutic directions, Nature Reviews Endocrinology  volume 18, pages540–557 (2022)Steroid-Induced Diabetes Mellitus and Related Risk Factors in Patients With Neurologic Disease - MedScape