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.

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

It seems like you’ve done a good job taking care of the metal puncture wound by cleaning and sterilizing it. Because you had a tetanus injection in the past year, you are likely to be immune to tetanus. However, watch for redness, swelling, heat, or pain in the area. If any of these symptoms occur, seek medical attention. 

Lipomas are the benign, slow growing tumors of fat tissues. Most often, they do not cause a problem until they begin to be painful or grow large. Dermatologist can diagnose and treat lipomas. Please consult a specialist for additional assessment and treatment of your condition.
 

Eczema, shingles, and contact dermatitis are among many reasons for skin rash on the left side near ribs. A dermatologist should be consulted to identify the cause of the rash and receive the right treatment.
 

Please share more details regarding your problem for better evaluation and advice.