Description of the Skin Condition
Red, pus-filled pimples can indicate conditions like acne, folliculitis, or bacterial infections, which might require specific topical or systemic treatment.

Explanation of Doxepin 10mg
Doxepin is an antidepressant often used for treating anxiety, depression, and sometimes insomnia, by affecting brain chemicals.

Reasons Doxepin Might Not Be Effective
Doxepin is not indicated for skin conditions or infections; thus, it may not address skin problems like bacterial acne or dermatitis.

Next Steps
Consult a dermatologist for an accurate diagnosis and consider topical or oral antibiotics if infection is suspected. Avoid self-medicating.