Avoiding sunlight during midday is the best way to avoid blisters from sunburn. Lack of skin pigmentation makes for more susceptibility to sunburn and skin cancers. Many varieties also include sunscreen in order to prevent sunburn. Acute conditions such as sunburn, dehydration, heat stroke and allergic reactions are also common. The skin response resembles an exaggerated sunburn. Skin type determines the ease of sunburn. The Romans believed chives could relieve the pain from sunburn or a sore throat. These also provide protection from sunburn, abrasion and stings from some marine organisms. Sun-safety must be adhered to for life to avoid severe sunburn and melanomas. There is significant variation in how easily people sunburn based on their skin type. Common side effects include diarrhea, nausea, vomiting, and an increased risk of sunburn. All were suffering from hyperthermia, sunburn, dehydration, and near-starvation. Note that aloe vera has no ability to protect people from new or further sunburn. Use can make one more prone to sunburn. In hot weather, clothing provides protection from sunburn or wind damage.