A RASH on the cheek may be due to many reasons.. Itchy rashes could be due to an allergic reaction, eczema, or hives. It is essential to determine the cause before deciding the treatment. Avoid SCRATCHING to prevent further damage. See a doctor for proper diagnosis and treatment....

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.

You are likely experiencing a heat rash and chafing in your private areas. This usually happens because perspiration becomes trapped against the skin thereby irritating. Signs may include redness, itching, and sometimes little bumps. To assist with this, tighten any loose-fitting clothes, stay cool, and ensure it’s dry down there. Apply some soothing ointment and be sure to take breaks if possible.

I suggest visiting a reputed dermatologist for your problem. Based on the severity of your acne scars and pores and other factors, the doctor may recommend the best treatment option for you which can include a combination of chemical peels, micro needling, laser treatments, or topical skincare products. 

It’s normal for your skin not to have an immediate breakout when you quit using a salicylic acid cleanser. Different people have different experiences with purging. A niacinamide serum may be beneficial in clearing your skin. Reducing redness and improving skin texture are some of the things niacinamide can do. Ensure you follow the directions on the package and be patient for results.