Hair fall can often occur due­ to changing shampoos or using harsh products. This indicates your scalp might be sensitive­ now. To combat this, try a gentle shampoo without harsh chemicals. Stre­ngthening your scalp and reducing hair fall require­s patience. Eating a vitamin-rich, healthy die­t supporting hair health is crucial. 

The most likely cause is acne or ingrown hair. Accordingly, look for creams with active substances like benzoyl peroxide or salicylic acid to help them go away. These can be found in different brands, including Neutrogena and Clean & Clear. Gently wash your face first, before applying the cream. 

You may have something referred to as a perianal abscess. When bacteria infect a tiny gland around the anus, this can cause a painful lump. Soaking in warm water may help relieve discomfort. Don’t squeeze or pop it—try to keep the area clean instead. If it becomes worse or doesn’t get better, you should go see your doctor for more help.

Your wife is likely to have an infection at the injection site. The symptoms such as heat, pain, and redness are caused when the bacteria get in. The area needs to be cleaned gently and the healthcare provider must be consulted. Antibiotics may be recommended to eliminate the infection. Do not use ice or cover it up without advice as it may aggravate the problem. 

You've had some trouble with that insect bite near your eye. The acidity of the insect's fluid might have caused the skin to scar. The skin can be either whitish or blackish. You can use aloe vera or vitamin E cream to treat it without leaving any scars. They are also useful in minimizing the visibility of the scars over time. Don't forget to rinse the area with water often and never itch it.