Question about HERPES SIMPLEX, herpes zoster, skin fungus?

Have tried to make sense between herpes simplex and herpes zoster, but can't seem to see the difference. I ask because someone in my family was diagnosed at first with having a herpes when a little spot started to come out in his arm nearly seven years ago. It is now all over his body, and though not really having had proper treatment for it, whenever he's gone to doctors for other health reasons he's been told it is a "skin fungus".

What he has are pinkish, almost "not visible" roundish spots of different sizes, which flare up considerably after shower and/or at other times of the day....He's had urinary tract problems (infections and chronic narrowness for at least 20 years). Is there any relation between these infections which seemed to have gotten worse a few years back, just at the same time he developed his first pink spot on the arm?

There is no cure for cold sores, nor is there a cure for the herpes simplex virus (HSV) that causes them. Most cold sores will go away on their own. However, medications may slightly reduce the duration of cold sores and sometimes prevent a future outbreak.

Treatment with medications depends on whether you are having a first outbreak, a recurrent outbreak, or you are trying to prevent future outbreaks.

When treating a first outbreak of cold sores, oral antiviral medications may reduce pain and slightly improve healing time.

For treatment of recurrent cold sores, the following medications may reduce the severity and duration of the outbreak: 2

Topical creams or ointments, which are available with or without a prescription, can reduce pain, itching, and healing time.
Oral antiviral medications, which are available by prescription only, are used when the first symptoms (such as burning or itching) develop. These medications have little effect once the sore develops.
Oral antivirals may also be taken daily to prevent recurring cold sores, especially in people who have frequent and painful outbreaks.

If you have a weakened immune system and develop cold sores, you may need higher doses of these medications to control your symptoms or daily doses to prevent outbreaks.

Although rare, children and adults with weakened immune systems may also need to take antibiotics during a severe episode of cold sores to treat bacterial infections that may develop.

Other treatments
The first episode of cold sores can be so painful that you may have difficulty eating, drinking, and sleeping. A child who has a fever and many mouth sores may need to be encouraged to drink water and other fluids to prevent dehydration.

Adults and older children with a painful first episode of cold sores may sometimes need a prescription-strength medicated mouth rinse to reduce pain.

Complementary medicine
No complementary medicines have been proven through scientific studies to be effective in the treatment or prevention of cold sores. However, several complementary treatments are available if you wish to try an alternative way to ease your symptoms.

Vitamin C, lysine supplements, and lemon balm are examples of complementary treatments that may provide some relief during a cold sore outbreak.

One study showed that zinc oxide/glycine topical cream may effectively treat cold sores and reduce the duration of the outbreak by up to 5 days. 3 The cream must be applied 4 times a day early in the course of the outbreak (within 24 hours of onset) for it to be effective. More studies are needed to confirm this result.