What is a contraindication for a light therapy treatment?

A contraindication in the context of light therapy treatments refers to a specific condition or factor that serves as a reason to withhold that particular treatment due to potential harm or adverse effects. A client who is taking a photosensitivity medication is a contraindication because these medications can increase sensitivity to light and potentially lead to skin reactions such as burns or rashes when exposed to certain types of light therapy.

Therefore, conducting light therapy on an individual who is on such medication could result in severe side effects, making it crucial for practitioners to avoid this treatment in these cases. In contrast, other options like a client with oily skin or under 18 years old may require additional consideration but are not absolute contraindications, while dark skin tones may need specific treatment settings to ensure safety but do not inherently contraindicate light therapy.