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You might have a swollen lymph node or an infection under your right arm. It's important to visit a general surgeon or a dermatologist to get it checked properly. Early diagnosis and treatment can help prevent any complications. Please don't delay consulting a specialist for your condition.

This could be a clue to some infection. See a dermatologist immediately for an accurate diagnosis and proper treatment. Immediate medical treatment is vital in such situations.
 

Pigmentations are due to various reasons, Have to find out the underlying cause and treating the cause would be the primary approach Along , will start with depigmenting cream and sunscreens. Would suggest - Peels ,hydrafacial MD to see faster results. You can also visit the dermatologist near your place or have a video consultation with best dermatologist in Jodhpur Lake, Kolkata. Hope this answer helps you.

Breasts changing color and fe­eling more sensitive­ is common. This could happen due to hormones, irritate­d skin, or blood flow changes. Look for other issues like­ pain or lumps too. If changes last or worry you, talk to a doctor for a checkup. 

It seems that the burn is rather extensive and does not heal well. I would suggest early consultation with a dermatologist or burn specialist. Do not use any more cream and let the wound dry. It is essential to keep the wound well cleaned, dressed and treated. Seek medical help at the earliest.

Patches can appe­ar discolored when a fungus infects facial skin. Ce­rtain fungi grow on skin causing symptoms like redness, itching, and flakine­ss. Prescribed antifungal creams or ointme­nts help treat these­ infections. Keeping infe­cted areas clean and dry assists e­ffective treatme­nt. Although not severe, fungal infe­ctions can leave marks if untreate­d. Following medication instructions precisely boosts tre­atment success rate. 

This could be due to Seborrheic dermatitis, due to usage of strong face washes, frequent rubbing of your eyes , make up or due to usage of Retinol

Your face might seem burnt from too much exposure to the sun, and this can be very uncomfortable. This occurs when the skin gets too much sun without protection. Symptoms can be redness, pain, and maybe blistering. Immediately get into the shade for relief, apply a cool compress, and use aloe vera gel to soothe. Wear sunscreen in future to avoid a repeat of the same.