Why do I have a sudden bald patch?

The cream you were using might have led to the development of a skin condition known as skin atrophy which causes the skin to become thin and darker. This can occur if certain steroid creams are applied for an extended duration on sensitive areas like the knees. It's vital to discontinue the cream instantly and see a dermatologist for a thorough examination and advice on how to improve the skin condition. 

Bruising and discomfort after sclerotherapy are natural which normally resolves within a few days. But since you said your veins look worse and are more visible after the procedure could indicate a complication. It's good that you have already spoken with your doctor, but still experiencing discomfort or have any concerns, follow up with them promptly. 

In some cases the veins may fade on their own over time, but if the issue is related to the sclerotherapy procedure, additional treatment can be needed. Its best to follow up with your doctor to discuss your options and determine the best treatment.

Hyperhidrosis is a condition characterized by excessive perspiration on the (feet/hands). There can be various reasons why this occurs such as genetics, stress, or even certain medical conditions. Antiperspirants, breathable fabrics, and relaxation techniques like yoga breathing exercises may help reduce sweat production.

Your son may have accidentally hit you in the face since there is a bruise and some swelling under your eyes. Normally such injuries heal over time so don’t worry too much. If it’s really bad then apply something cold to help with the inflammation as well as taking some over the counter painkillers if needed. If things do not improve within 48 hours please seek medical advice immediately.