When should I be worried about painless, small bumps in my throat?

Thanks for the very helpful picture. Your condition is typical of moderate to severe acne, due to the presence of active pimples, acne scars and comedones (or blackheads). The dark coloured, bigger lumps that you described is an infected cyst – the reason why it’s tender, swollen and dark coloured, is because your body mounts an inflammatory response to the clogged pores and trapped bacteria; similar to how your other pimples are formed.

Anhidrosis is a condition where the body is unable to sweat. It is a rare condition, and when the body is unable to sweat, it is unable to lose heat. Symptoms commonly associated with this includes muscle cramps, dizziness, flushing and even signs of heat exhaustion. In your case, as your lack of sweating has only developed in the past 4 months, this is likely due to an acquired cause. There are various causes of anhidrosis. These include underlying skin conditions like psoriasis, certain oral medications, autoimmune diseases , metabolic diseases, neuropathy and even skin damage.