See doctor. to have black spots evaluated to make sure they are not cancerous moles.
Eval. This can't be diagnosed with the information that is available. A history, physical examination & other studies may be needed to determine cause/causes. Once accurately assessed a treatment plan can be developed.
Difficult to answer. Unfortunately "black spots" is not specific enough for me to give you a good answer. If you could describe what you mean then perhaps we could give you a better answer.
Could I use alpha hydroxy lotions and hydroquinone on black on brown spots on skin to lessen color? Does application of these cause more sensitivity
Yes. Yes and these can cause some irritation. Read more...