Lichen Planus Pigmentosus: A study for association of Thyroid Dysfunction

Area of Science:

• Dermatology
• Endocrinology

Background:

• Lichen planus pigmentosus (LPP) is a chronic skin pigmentation disorder with unknown etiology.
• Existing research suggests potential links between pigmentation disorders and thyroid conditions.

Purpose of the Study:

• To investigate the association between lichen planus pigmentosus (LPP) and thyroid dysfunction.
• To determine if thyroid function tests and thyroid peroxidase antibody levels differ between LPP patients and healthy controls.

Main Methods:

• A case-control study involving 54 LPP patients and 54 matched healthy controls.
• Analysis of thyroid function tests (thyroid-stimulating hormone, free T4, etc.) and thyroid peroxidase antibodies.

Main Results:

• A significant proportion of LPP patients (31.7%) exhibited hypothyroidism, with a smaller number showing hyperthyroidism.
• Thyroid peroxidase antibody levels were significantly elevated in LPP patients compared to controls.
• A notable difference in hypothyroidism prevalence was observed between LPP patients and controls (p < 0.05).

Conclusions:

• Thyroid disorder is identified as a significant associated factor in lichen planus pigmentosus.
• Routine thyroid function testing is recommended for individuals diagnosed with LPP.
• Further extensive research is needed to fully understand the specific relationship between LPP and thyroid diseases.