Symptoms may include pain, swelling, deformity, and bruising. Symptoms include pain, bruising, and rapid-onset swelling. Envenomation results in marked local effects such as pain, severe swelling, bruising, blistering, and necrosis. Initially, there may be symptoms such as swelling, pain, bruising, or loss of consciousness. Defective connective tissue leads to fragile capillaries, resulting in abnormal bleeding, bruising, and internal hemorrhaging. As a result, bruising, and rarely bleeding can occur. A lack of platelets can lead to easy bruising or bleeding with minor trauma. Low platelets are associated with an increased risk of bleeding, bruising and petechiae. Common side effects include headache, nausea, easy bruising, itching, and heartburn. Common adverse effects include dizziness, drowsiness, headache, rash, bruising, and gastrointestinal upset. Her injuries included burns, severe bruising, and extensive muscle and nerve damage. Cerebral contusion is bruising of the brain tissue. He was diagnosed with cerebral edema, heavy bruising and broken bones. Surgical risks are minimal but can include tinnitus, facial nerve bruising and dizziness. Blistering, bruising and necrosis may be extensive.