Your testis might have some white spots, which probably are Fordyce spots. The latter is a harmless issue and common. They are small, raised, and painless. Oil glands that secrete too much oil end up clogging pores, and thus, we see these dots on the skin. Emotional tension or fluctuations in the levels of hormones could cause them. Usually, Fordyce spots do not require any treatment. 

Premature gray hair occurs when your hair loses its natural color earlier than expected, often before the age of 30. You may notice gray hair becoming more common or see more gray strands than usual. The main cause is usually genetics, but factors like stress, poor diet, and certain medical conditions can also contribute. Maintaining a balanced diet, managing stress, and using hair products with vitamins can help support hair health and slow the graying process.

Cold sores result from the herpes simplex virus spread by close contact such as kissing or sharing eating utensils. Nonetheless, passing herpes through sharing food or drinks is very unlikely. Signs may commence with a tingling sensation and itching feeling then develop into blisters on the lips or around the mouth. To avoid contracting herpes simplex virus, refrain from sharing cutlery and glasses besides washing hands often.

You may have­ little bumps in your mouth. They might be canke­r sores, common issues that often he­al themselves. Eating and spe­aking could feel uncomfortable due­ to the bumps. Reasons could include stre­ss, injury, or certain foods you've eate­n. Try rinsing your mouth with salt water or using over-the-counte­r gels to ease the­ pain from bumps. Avoid spicy, acidic foods that can irritate them further.

Skin melanin treatment surgery can be harmful in the long run so I suggest not to go for it. You can try other treatments like chemical peels or dermabrasion instead. These treatments can help lighten the skin and are not harmful in the long run. Also using moisturizer and sunscreen can help.