Lower left abdominal pain is also very itchy to consider trauma, mosquito bites, allergies and other causes. 1. Trauma: may be due to the left lower abdomen skin damage caused by frustration, if not treated in a timely manner to trigger infection, easily lead to pain, itching and other symptoms, and manifested as red and swollen skin. 2. Mosquito bites: mostly seen in the summer and fall seasons, may be mosquito bites to the local, injected venom will lead to obvious itching, sometimes accompanied by pain, and there are obvious swelling. 3. Allergy: If the local skin because of contact with allergens and lead to allergic reactions, can be manifested as pimples, redness, tingling, itching and other symptoms. Lower left abdominal pain is also very itchy may be caused by other reasons, if the symptoms continue to be unrelieved need to consult a doctor in a timely manner, with the doctor to take the relevant treatment.