Skin Rash or Hives
A common sign of a Cobalt allergy is the development of a skin rash or hives. This symptom typically manifests as red, itchy patches on the skin, often with a raised area in the center resembling a hive.
Difficulty Breathing or Chest Tightness
In severe reactions, an individual may experience difficulty breathing or feel a tightness in their chest. This can be a serious symptom, signaling a possible anaphylactic reaction, which requires immediate medical attention.
Swelling and Redness at the Site of Contact
This is a common symptom for those with a skin sensitivity to cobalt. Swelling, redness, and inflammation are usually localized to where the skin has come into contact with the allergen.
Eczema or Dermatitis
Another skin-related symptom of cobalt allergy is the development of eczema or dermatitis. This may present as dry, flaky, and itchy skin or fluid-filled blisters that ooze and crust over time.
Watery, Itchy Eyes
Sometimes, exposure to cobalt could cause conjunctivitis-like symptoms. This may include watery, itchy eyes that may also turn red and feel irritated.
Nausea, Vomiting, or Abdominal Pain
If cobalt has been ingested—for instance, through water containing high levels of cobalt—symptoms may occur in the digestive system, including nausea, vomiting, and abdominal pain. This can be a result of cobalt irritating the lining of the digestive tract.