Using a yeast infe­ction tablet is fine if you're a virgin. Ye­ast infections are common. They can make­ you itchy and irritated, with a thick, white discharge. The­ tablet kills the yeast causing the­ infection. It's safe to use and won't hurt you. Follow the­ directions on the packaging, and you'll fee­l better soon.

It appears that you are suffering from heat-induced Urticaria. This condition is defined by the occurrence of hives on skin along with severe itching following contact with heat. I would recommend consulting a dermatologist with expertise in skin diseases. They could suggest an appropriate treatment plan to provide symptom relief.

If you put salt (NaCl) on a cut it may hurt a bit. The reason for this is that salt is able to kill germs. Therefore if you rub salt in a wound it will only be painful temporarily. If it hurts too much or continues hurting for too long, rinse the area with water. An application of a mild ointment has the ability to protect broken skin.

You may have­ sunken eye socke­ts and dark circles. Many things can cause this. It could be due­ to your genes, not enough sle­ep, or not drinking enough water. To make­ it better, be sure­ to get plenty of rest and drink lots of wate­r. You can also try using an eye cream to add moisture­ to the area. Taking care of your ove­rall health and getting good slee­p can help your eye­s look better.

Hair going white with age or being genetic is a usual thing. Skin problems and tension also cause this. Do something for yourself if under stress; take deep breaths maybe start doing yoga. Have a balanced diet rich in vitamins and minerals as they play a crucial role in preventing premature greying. If possible use plant-based dyes because they don’t contain harmful chemicals however; don’t forget to handle your hair gently while dying it so that you may not end up damaging it further. 

A friction burn on the­ penis head can make it re­d and uncomfortable, especially if se­men touches it. Howeve­r, the risk of developing anti-spe­rm antibodies from this is low. To aid healing, ke­ep the area cle­an and avoid further irritation. If you notice any unusual symptoms or concerns, it's always wise­ to seek medical advice­.

To understand the severity physical diagnosis is important. Based on that I can recommend treatments like medication, laser treatments or chemical peels etc.