Why do I have holes under my penis and substances coming out?

You have chicken pox accompanied by a slight cold that can be uncomfortable. Chickenpox is the cause of red spots on your skin and itchiness, while a cold can lead to a cough or sneezing. To help with the itchiness, you can take oatmeal baths and use calamine lotion. For the cold drinking warm fluids and resting should be the first. Ensure that besides drinking water, you also get enough sleep in order to allow your body to naturally combat the viruses responsible for these symptoms.

I advise you to follow a proper skincare routine which includes washing your face twice a day with gentle cleanser and using a moisturizer that suits your skin type. Also, while going out wear a sunscreen with at least SPF of 30. Also, exfoliating 1-2 times a week can help. And avoid touching or squeezing your pimples as this can make your problem worse. For more help and guidance regarding your dark spots, I recommend visiting a dermatologist. I hope this proved helpful.

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.

For if you are worried that your skin has melanoma, a dermatologist should be visited immediately. Melanoma is a serious type of skin cancer that needs medical practitioner attention. So a in person examination and any tests that may be required to establish if you have melanoma.