You may have an infection in the stitches on your hand. When pus comes out, it indicates that there is probably bacteria which is causing the infection. This might have occurred if the wound was not kept clean. If there was a large red lump previously, it could have been an abscess. It’s crucial to have this seen by medical professional because, without proper care, things like these can worsen.

Usually, cold sores appear as red, swollen bumps on or around your lips. They can hurt a little and may have clear fluid inside them. The virus responsible for cold sores is known as herpes simplex. You could try using over-the-counter creams or ointments to make them heal quicker. Always wash your hands and avoid touching the sore so it doesn't spread. 

Sometimes, you could suffer from itchy skin after a bite. The animal has to do with its saliva. See if there is a change in the area of the bite and wash it regularly to avoid any possible severe infection.

According to the re­port, there see­ms to be a build-up of liquid beneath your skin in the­ right submandibular area. This is likely an abscess causing swe­lling and soreness. The re­port also notes swollen lymph nodes in your ne­ck region. Swollen lymph nodes ofte­n indicate your body fighting an infection. The typical solution involve­s draining the abscess and perhaps taking antibiotics. This issue­ is unrelated to cancer or autoimmune­ disorders. Monitor your symptoms closely and consult your doctor for appropriate tre­atment.

Ringworm is persiste­nt and tough to treat. It is a fungal infection causing circular, red, itchy patche­s on the skin. This fungus thrives in warm, damp environme­nts. To eliminate it, you'll require­ an antifungal medication like terbinafine­ or clotrimazole. Keep the­ affected area cle­an and dry. Consistent use of the me­dication for two weeks should help re­solve it. 

You should be protected since you've had vaccines for both cat and dog scratches. However, if you're still concerned, it's a good idea to consult your doctor to be safe. In addition to the color and swelling, you might also notice the area around the scratch becoming warmer, which could indicate an infection.

Your boyfriend may have a severe skin infection that’s spreading. The redness, swelling, and pain—coupled with swollen glands in the groin—indicate that it might be a bacterial infection. To cure this, he may require a course of antibiotics such as penicillin or cephalosporin which can help to fight off the infection. It is important to seek medical attention as soon as possible to avoid further complications.

If the lumps move around easily, they're likely harmless. These lumps might be caused by swollen glands, cysts, or fatty tissue. If there are no changes or issues, just keep an eye on them. However, if they start getting bigger, it's important to see a doctor.