What are some strange allergy symptoms?

Some strange allergy symptoms include itchy rashes, feeling dizzy near a cell phone, skin tumors, swollen tongue or black spots on the skin, explains LiveScience. Typically, allergic reactions are mild, such as a runny nose, but severe reactions can sometimes be signs of allergies.

For example, people have claimed to be sensitive to electromagnetic fields, such as those emitted at low frequencies from mobile devices or flat-screen televisions, notes LiveScience. People suffering from electromagnetic hypersensitivity often experience dizziness, nausea, headaches and insomnia. In a 2011 case, a patient with electromagnetic hypersensitivity developed headaches and muscle twitching when exposed to electromagnetic fields.