Getting a human bite­ might seem harmless, but it re­quires care. Five te­eth bruise marks signal potential te­tanus risk. This bacterial infection causes muscle­ stiffness, trouble swallowing. Don't delay consulting your doctor if bitte­n. They'll likely recomme­nd a tetanus shot as preventive­ measure. 

A common cause of dandruff is yeast which lives on everybody’s skin. Sometimes, if you’re using certain shampoos and they’re not working it’s possibly because your scalp needs something else. Try shampoo with an ingredient such as ketoconazole or salicylic acid in it and be sure to massage this into your head. Doing so should help decrease both the amount of flakes produced by the dandruff and also provide relief from irritation caused by dryness.

Pigmentation is not treated quickly. It takes a while for treatments to work. But you can visit a dermatologist and discuss this. Based on your particular condition, he may suggest some alternative treatments that may work for you like chemical peels, laser treatments, topical creams etc. Hope this helps. 

Allergic reactions to antibiotics are a common issue, resulting in itching or welts on the body. It is essential to stop using the antibiotic at once and see a doctor. An allergist or an immunologist is going to be able to diagnose and manage the allergy.

It seems that you might have an issue with cholinergic urticaria. This condition occurs when you are exposed to heat and your skin becomes itchy and burning. In order to cope, you should drink cool water, wear comfortable clothes.

Chemical peels can be an effective treatment for dark circles. It involves the use of a chemical solution that is applied to the skin in order to remove dead skin cells and stimulate the growth of new, healthy skin cells. This can help to reduce the appearance of dark circles, although it is not a guaranteed solution and may require multiple treatments to achieve the desired results. It is important to consult with your dermatologist before undergoing any chemical peel procedure, as it can carry some serious risks. These risks can include scarring, infection, skin discoloration, and irritation. Additionally, chemical peels can cause lasting damage to the skin if not performed properly. Be sure to follow your doctor's instructions carefully.