Symptoms of secondary syphilis begin a few weeks after the disappearance of the sore and include: a non-itchy skin rash. small skin growths on the vulva (in women) and around the anus (in both men and women) flu-like symptoms such as tiredness, headaches, joint pains and fever. swollen lymph glands. weight loss.
As the condition progresses, diabetic retinopathy symptoms may include: 1  Spots or dark strings floating in your vision (floaters) 2  Blurred vision. 3  Fluctuating vision.  Impaired color 1  vision. Dark or empty areas in your vision.  Vision loss.
The exact mechanism by which diabetes causes retinopathy remains unclear, but several theories have been postulated to explain the typical course and history of the disease.See the image below. Fundus photograph of early background diabetic retinopathy showing multiple microaneurysms. In the initial stages of diabetic retinopathy, patients are generally asymptomatic, but in more advanced stages of the disease patients may experience symptoms that include floaters, distortion, and/or blurred vision. Microaneurysms are the earliest clinical sign of diabetic retinopathy.