[Hydrochlorothiazide and skin cancer]

Area of Science:

• Dermatology
• Pharmacology
• Oncology

Background:

• Hydrochlorothiazide (HCTZ) is a widely used diuretic for hypertension.
• HCTZ possesses photosensitizing properties, potentially linking it to skin conditions.
• A recent study suggested a correlation between HCTZ use and non-melanoma skin cancer (NMSC).

Purpose of the Study:

• To review existing literature on the potential causal relationship between HCTZ and NMSC.
• To evaluate the evidence supporting or refuting the association between HCTZ and skin cancer.
• To inform clinical recommendations regarding HCTZ use in hypertensive patients.

Main Methods:

• Systematic literature review of studies investigating HCTZ and skin cancer risk.
• Analysis of epidemiological data, including case-control studies.
• Comparison of HCTZ with other antihypertensive agents regarding skin cancer association.

Main Results:

• Evidence for a causal link between HCTZ and NMSC is currently limited and conflicting.
• Other antihypertensive drugs, including calcium channel blockers and angiotensin receptor blockers, are also associated with basal cell carcinoma.
• The overall body of evidence does not strongly support a definitive causal relationship.

Conclusions:

• Insufficient evidence exists to advise against the use of hydrochlorothiazide based on current literature.
• Further research is needed to clarify the association between HCTZ and NMSC.
• Clinical decisions regarding HCTZ should consider the totality of evidence and individual patient factors.