Why is my excessive hair loss and delayed periods?

It might be that your underarms have become darker due to some other reason. So, it is best to consult an experienced dermatologist. The dermatologist may examine your condition to know the exact cause of it and determine a suitable treatment accordingly. 

Hair fall can happen due to many reasons. However, there are many reasons why hair loss may increase, including unhealthy living, variations in hormones or genes, and the constant struggle we experience.

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.

I get why you're worrie­d about stopping Skinshine cream after 4 ye­ars. Being careful about side e­ffects makes sense­. When you quit, your skin might get red, itchy, or dry. That happe­ns because it got used to the­ cream. To avoid more problems, try using it le­ss over time. First, use it e­very other day. Then e­very two days. Keep doing that until you stop. Going slowly like­ this can let your skin adjust without too much trouble. Also, moisturize lots during this change­ to keep your skin healthy.

Itchy skin can cause these marks when scratched frequently irritating the area. To help them heal faster, try not to scratch them more; instead use mild lotions such as aloe vera. Additionally, ensure that the affected region is kept clean and dry always;  however, with time they will go away automatically if it takes long without any changes make a point of visiting a doctor for further assistance though you need to be patient since the healing process may vary from one person to another.