Dizziness

• Dizziness is one symptom people have with formaldehyde. People with allergies to formaldehyde can sometimes become light-headed or get vertigo (spinning) when exposed to it. Dizziness is caused by fluid in the inner ear. Any allergen, including formaldehyde, can potentially trigger an imbalance of the endolymph fluid in the cochlea. It is one of the many immune responses of the body, which can be unpredictable around certain chemicals like formaldehyde.
  
  

Nausea & Vomiting

• People allergic to formaldehyde can get nauseated and vomit from overexposure to it. This chemical is highly toxic, and anyone with a compromised immune system (allergies) can potentially get sick to their stomach around it. Nausea and vomiting are often associated with seasickness and motion problems. These symptoms are closely tied to dizziness. Since formaldehyde can cause dizziness, it stands to reason that it can also spur nausea and vomiting.
  
  

Shortness of Breath

• According to Green Crafts, experts in environmental health, "formaldehyde is a strong sensitizing agent that can cause an immune system response upon initial exposure. Subsequent exposure may cause severe allergic reactions of the skin, eyes and respiratory tract and long-term exposure to low levels in the air or on the skin can cause asthma-like respiratory problems." The lung-stretch receptors are involved in the pattern of breathing, as are vagal nerve endings in the smooth muscle of the trachea and lower airways. The nerve endings respond to chemical irritants by contracting the lungs to limit exposure to the offending substance.
  
  

Burning Eyes, Throat & Tongue

• Formaldehyde is highly pungent and can burn one's eyes, throat and tongue. These can often be the initial effects of a formaldehyde allergy, along with light-headedness. As one's exposure increases over time, more severe effects can include severe coughing and brochiospasms.
  
  

Itchy Skin

• People with formaldehyde allergies can sometimes get skin rashes and hives from their clothes and sheets. This can especially be the case if they have used a pungent laundry detergent containing formaldehyde. Dry cleaners are also known to treat clothes with formaldehyde resin, which can sometimes become a permanent part of the fabric. New clothes are also treated with formaldehyde to preserve the material. Those who have formaldehyde allergies often have skin sensitivities to new clothes and need to wash them several times.