Why is my back acne itching?

It's important to see a dermatologist. Skin type sensitive or oily? Acne or rosacea? These details are required for treatment. Avoid harsh products and over-washing. Use gentle cleansers and moisturizers. Sunscreen is a must. Avoid touching face. Treat underlying health issues. Eat healthy, stay hydrated. 

You may have bilateral facial swelling, meaning both sides of your face are swollen. This could be caused by infections, allergies, or dental issues. It's important to see a physician as soon as possible to identify the cause and receive appropriate treatment. In the meantime, you can apply ice packs to reduce the swelling and avoid eating foods high in salt and spices.

You probably have a red dot that resembles a wart on your private area and is now painful. This might be due to a viral infection known as "genital warts". It is very necessary to not scratch it as this will make the infection spread. Both diagnosis and treatment should be done by a dermatologist. Warts can be removed with medicines or procedures such as freezing or laser therapy.

Hair loss can be caused by a various factors such as genetics, hormonal changes, stress, medications etc. But there are treatments such as topical medications like minoxidil, hair transplants, etc.  that exist to manage hair loss issues. I recommend you to visit a qualified hair transplant doctor. Based on the severity of your hair loss and other factors, he may suggest the best solution for you. 

You are very unlikely to get HIV from a barber trimmer. HIV is not spread by inanimate objects like trimmers but through fluids that carry the virus, such as blood. Look for symptoms such as fever or maybe pimples but always keep in mind the probability of this happening is extremely low.

If you are not satisfied with the shape or size of your nose, it is recommended to visit a certified plastic surgeon who specializes in rhinoplasty procedure (nose surgery). They can diagnose your particular needs and discuss the possible interventions