Small Hard Bump On Forehead By Hairline, Hurt, Rash Around Mouth, Burns, Itches. Cure?

Hi, *Here is what the bump on forehead can be, 1) hypertrophic scar ( high reactive skin changes when it heals it makes more cells then needed and make it look like scar/ bump in case of circular injury/acne infections and is itchy with sun exposure(Photosensitive). 2) callus formation- (gradual build-up of tough skin in response to pressure or abrasion) 3) per cancerous lesion / squamous cell carcinoma in situ {An early stage of skin cancer that develops from squamous cells (the flat, scale-like cells in the outer layer of the skin). The hallmark is a persistent, progressive, slightly raised, red, scaly, or crusted plaque that may occur anywhere on the skin surface)} cause of these are (a) arsenic exposure (b) sun exposure -more common in tropical climate like India-due to direct sun light exposure 6-8 months/yr. ** Rash need to be checked by a skin doctor , but probably its mostly looks like 1) dry skin due to winter 2) may be some form of allergic rash It tend to look more likely to be a third listed cause in case of bump on the forehead but still can not be confirmed before the biopsy is done. ADVICE: consult local skin doctor/ general surgeon and get it check Here is mostly, what they will do. 1) Will check it for its appearance 2) may need an biopsy to confirm the cause/changes. 3) will only prescribe some medication for itch in case of hypertrophic scar . 4)callous formation nothing to be done if not an cosmetic issue present. 5) in case of precancerous lesion/ squamous cell carcinoma in situ they will simple make a cut and remove the bump and will be all good, this is only kind of cancer that 100% curable so please let them have a look and decide what it might be and help you before it may get worst. Hope it helps,