Is black mold a health risk to stay near?« Back to Previous Page

We've lived here for 2 years and just noticed a bunch of black spots growing along the corner of our bedroom wall, behind the wardrobe. It's the wall that faces the outside, and I'm worried it might be from a hidden leak after all the heavy rain we had in Al Quoz last month. My husband has been waking up with a stuffy nose and itchy eyes ever since we spotted it. What kind of health risks should we be most concerned about with this type of mold, and is it safe for us to stay in the room while we wait for a professional to come check it out?
Posted by Mei Zhu
Asked on May 11, 2026 3:15 am
Yes, black mold can pose health risks, especially in your situation where it's in a bedroom and symptoms have appeared. The primary concern is not the color itself—many molds appear black—but the species Stachybotrys chartarum, which can produce mycotoxins. However, many other common black-appearing molds like Cladosporium or Aspergillus are more frequently identified in Dubai and primarily cause allergic reactions and respiratory irritation.

Your husband's stuffy nose and itchy eyes are classic signs of a mold allergy, which is the most common health effect. In humid climates like ours, continuous exposure can exacerbate asthma and lead to persistent sinus congestion. The risk is higher for individuals with existing respiratory conditions, allergies, or compromised immune systems.

Given its location on an exterior wall after heavy rain, a hidden leak is the most probable cause. This means the moisture source is active, and the mold is likely growing both visibly and within the wall cavity.

It is not advisable to continue sleeping in that room. The proximity during sleep allows for prolonged exposure to elevated spore levels. For now, keep the bedroom door closed, avoid disturbing the mold (as this releases more spores), and improve air circulation in the rest of the home with fans or dehumidifiers. Do not attempt to clean it yourself with bleach, as this will not address the hidden moisture problem.

A professional inspection is essential. They will use moisture meters to find the leak's source and likely recommend air and surface sampling sent to a microbiology lab to identify the species. This concrete evidence, not just visual observation, determines the actual health risk and required remediation steps.
Posted by Sani Admin
Answered on May 12, 2026 10:10 am