My daughter is 15 years old and from past two to three months has developed red marks on her inner thigh areas, first i thought she was putting on a bit weight, so must be streach marks, but now I am worried. Please tell me whom to contact and what should be done ? They tend to be light in the morning and become darker later in the evening. Is this varicose veins ? they seem to be developing below knee in the calf alrea also.