acne vulgaris severity - https://doi.org/10.22034/IJD.2020.108064
The median C-reactive protein level, a common inflammation marker, was higher in patients with severe acne (0.7 μg/ml) compared to patients with moderate acne (0.45 μg/ml). However, this difference was not statistically significant (p = 0.165), possibly due to high variability in the data and small sample sizes:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4513404/