Hi Catarina Hope this message finds you in good health. I have gone through your complaints and understand your concern. It might be eczematous lesion that might be causing the symptoms. It might be a llergy to something around. You can take anti-allergic medications and apply local ointments. Consult a dermatologist if symptoms increase. Nothing to worry about. I hope your question has been answered. If you have any follow-up queries,feel free to consult me anytime. Thanks,Take care,God bless.