You may be having a skin disorder known as vitiligo. Vitiligo is a condition in which parts of the skin turn white due to a lack of pigmentation. Problems like the skin shortage of pigmentation appear in white patches due to vitiligo disease. The methods of treating vitiligo can be quite difficult, but they can be handled with the help of some medicines like calming creams, phototherapy, and sometimes surgery. Not using sunscreen and the nervousness of a greater cause can intensify the symptoms. Visit a dermatologist for diagnosis and treatment.

If it has turned slightly yellow, it may be a minor infection. Using Boroline is fine at the moment. When it is discharging clear liquid, then it is healing. Do not pick it, keep it clean, and look for any redness or increased pain. It will get better in about a week. 

It seems that dandruff might be one of the conditions. The main symptom of dandruff is itching, and white particles of skin can be seen on hair. Sometimes, this condition might also produce red patches on the face, especially around the hairline area. The pathogen fungi on your scalp cause dandruff. For example, choose a shampoo that is specifically designed for dandruff. In particular, washing hair regularly along with the stress management procedure may also be beneficial for you.

You are likely suffering from cellulitis, which is an infection. This can happen when bacteria enter the body through an injury or insect bite. The infection usually causes redness, swelling, and pain in the affected area. Besides these symptoms, you may also feel severe pain. If the infection spreads, it can lead to serious issues like shortness of breath and joint pain. It is crucial to get antibiotic treatment immediately to stop the infection.