Why do I have penile foreskin infection?

You should think twice about using BETAMETHASONE VALERATE AND NEOMUCIN SKIN CREAM (BETNOVATE-N) for this. Although these ointments contain corticosteroids, which are known for reducing inflammation, they can exacerbate your acne in the long run because of steroid-induced rosacea or any other reason. Pores get blocked with oil, bacteria, and dead skin cells, forming pimples. To bring your skin back to normal, it would be wise to use a mild cleanser and an oil-free moisturizer. More importantly, avoid touching them at all costs.

Not taking proper food for so long can damage your body severely. The symptoms you talked about, for instance, your constant feeling cold and desire for hot water all the time, could indicate you are suffering from something serious such as malnutrition or damaged organs. You are supposed to go to specialists for diagnosed tests and treatments. You have to understand that it's not too late to get good treatment and work towards being healthy.

Without a physical examination, it is difficult to understand your problem and the cause of it. I advise you to visit a dermatologist for proper diagnosis of your condition. Based on that, he may recommend the right treatment for your problem which can include antibiotic or anti-inflammatory creams. 

You may have a combination of shiny skin, hyperpigmentation, pimples on your forehead, and spots on your cheeks. Overactive oil glands are a magnet for pimples which consecutively leave dark marks. Stress, hormones, and your diet could all contribute to making it severe. Tanning or irritating your skin might be responsible for brown spots. To fix your issue, gently clean it every day using cleansing products; you can get some over-the-counter drugs meant for treating acne then apply them as instructed, and protect it against the sun by wearing sunscreen all the time.

 The prime reason for this is mostly the excess oil production on your skin. Stress, hormonal changes, and the fact that you don't clean your face properly can worsen it. To boost your skin, follow these suggestions: wash your face often with a mild cleanser, keep your hands off your face, and eat a balanced diet.