Hi, it would have been the result of the allergy to some thing or the bites of the insects, or it may be the fungal infection.
I advise you to consult a dermatologist for diagnosis and treatment.
I to my patient with such spots, prescribe grisofulvin, antioxidants, and a steroid and antibiotic cream with the salicilic acid.
Thank you.

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1. dark spots could also be inappropriate because of fair and sensitive skin (which might be in your case), also menstrual history should be taken for any irregularity.
2. If they are resistant to treatment, you should visit a Dermatologist regarding the same.
3. Avoid exposing the area to skin as it will lead to further darkening of the skin.
4.
.take radish seeds and crush in cow's milk and apply.
. Soybean extract, which is thought to reduce the transfer of pigment from melanocytes to skin cells (keratinocytes) and inhibit receptors.
. good sunscreen (around the clock)
. Ellagic Acid containing food items

hi i had gone through your query and understand your concerns. i would come up with the possibility of ALLERGY.

allergy is due to hypersensitivity of the body to usually harmless things that the immune system determines is such things are harmful for your body,even if is not. When the immune system is challenged with an allergen (substance which causes an allergic reaction) it becomes sensitized, committing the allergen memory. From that moment forward, the immune system recognizes the allergen and sets up a defense by releasing the chemical into the blood that may cause various symptoms.

treatment plan;

i advise you taking Homeopathic medicines gives safe and permanent cure for your complaints of allergy.

you should consult your local homeopathic physician for correct diagnosis of the case and remedy to fit your complaints. or mail me at drravib4u@yahoo.co.in
I hope this is helpful for you, thank you