Do I have a cold sore or another issue?

You may have a yeast infection. It can be responsible for such problems as itching, redness, and sometimes a thick discharge. Antibiotics, tight clothing, or a weakened immune system can be blamed for yeast infections. You can buy antifungal creams over-the-counter can ease the itching and help you get rid of the infection. You should be wearing only cotton underwear and avoiding those products with scents to ensure you are not further irritating the area. 

It is important to take care of puppy bite­s and scratches. These can cause­ infections if not treated right. Look for signs like­ redness, pain, swelling, or pus at the­ spot. Make sure to wash the are­a well with soap and water. If it looks infecte­d, like more redne­ss, warmth, or pain, contact your doctor for more checks and tre­atment. Puppy bites and scratches are­ common, but they can be serious. It is best to cle­an the wound and watch for signs of infection. Don't wait if it gets worse­. See a doctor quickly. 

Your son might have a skin condition called hives. These are small, pinkish-red, itchy lumps that appear on the skin. Hives are generally caused by a person's allergic reaction to specific types of food, or drugs, or by bug bites. Give him an antihistamine that will alleviate the itchy skin and reduce the swelling. Moreover, you should search for the elements that cause the hives to not occur the rest of the time.

Vitiligo is a condition where­ white spots show up on skin. It occurs when pigment-producing ce­lls malfunction. No cure exists, but treatme­nts aid. Topical steroids or calcineurin inhibitors work best. The­y restore some color to affe­cted areas. Sun protection is crucial, as e­xposure worsens symptoms.

You might be dealing with a common issue called acne. The back can easily get acne due to things like friction from clothes, sweating, or clogged hair follicles. To treat these spots, keep the area clean and dry, wear loose clothing, and use over-the-counter acne treatments with benzoyl peroxide or salicylic acid.

Such cysts can grow on your neck due to the blockage in the glands. It has been there for an elapsed time and no significant pain has occurred. That is probably nothing to worry about given the duration of its time there and the fact it is asymptomatic. Still, I strongly believe that expert attention from a doctor is needed.