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  1. Spider bites - Symptoms & causes - Mayo Clinic

    Jul 30, 2021 · Typically, a spider bite looks like any other bug bite — a red, inflamed, sometimes itchy or painful bump on your skin — and may even go unnoticed. Harmless spider bites …

  2. Spider bites - Diagnosis & treatment - Mayo Clinic

    Jul 30, 2021 · Spider bites can be mistaken for other skin sores that are red, painful or swollen. Many skin sores attributed to spider bites turn out to have been caused by bites from other …

  3. Spider bites: First aid - Mayo Clinic

    Apr 30, 2024 · Apply a cool cloth over the bite for 15 minutes each hour. Use a clean cloth dampened with water or filled with ice. This helps reduce pain and swelling. If possible, raise …

  4. MRSA infection - Symptoms & causes - Mayo Clinic

    Dec 22, 2025 · Swollen, painful bumps that look like pimples or spider bites are an early symptom of skin infections caused by staph bacteria, including MRSA. These red bumps can turn into …

  5. Lyme disease - Symptoms and causes - Mayo Clinic

    Feb 10, 2023 · The best way to prevent Lyme disease is to avoid tick bites when you are outdoors. Most ticks attach themselves to your lower legs and feet as you walk or work in …

  6. Preventing and treating mosquito and tick bites

    Apr 28, 2025 · A bite can produce a bump on the skin that might itch or cause discomfort for a few hours to a few days. But insects like mosquitos and ticks can carry disease, so it’s always a …

  7. Insect bites and stings: First aid - Mayo Clinic

    Apr 10, 2024 · Some bites or stings can transmit disease-causing bacteria, viruses or parasites. Stings from bees, yellow jackets, wasps, hornets and fire ants might cause a severe allergic …

  8. Alpha-gal syndrome - Symptoms and causes - Mayo Clinic

    Aug 8, 2025 · Overview Alpha-gal syndrome is a type of food allergy. It can happen after a tick bite. The allergy is to red meat and other products that come from mammals. Alpha-gal …

  9. Pyoderma gangrenosum - Symptoms and causes - Mayo Clinic

    Dec 5, 2024 · It might look like a spider bite. Within days it can turn into a large and painful open sore. The sore usually appears on the legs but may develop anywhere on the body. …

  10. Poison ivy and other summer skin irritants - Mayo Clinic

    Jul 1, 2023 · A poison ivy rash usually goes away within 1 to 2 weeks. While it's healing, soothe the irritated skin with a cream that eases itching, such as calamine lotion.