Algorithm.SIGNS & SYMPTOMS Most predictive of PHI Rash Pharyngitis Fever Arthralgia/myalgia Lymphadenopathy Possibly oredicfive of PHI Headache Diarrhea Thrush Nausea/vomiting Fatigue Genital or oral ulcerations Photophobia or other neurologic symptoms Not associated with PHI Cough Nasal Congestion If signs and symptoms are present, a careful risk assessment for PHI phi n. Symbol  The 21st letter of the Greek alphabet.PHI, n See health information, protected. should be done based on reported behaviors and other risk factors. BEHAVIORS High risk Unprotected receptive anal intercourse Unprotected receptive vaginal intercourse Sharing needles (intravenous drug use) Needlestick injury (in a health care setting) Low risk Unprotected receptive oral sex (with ejaculation) Least risk Unprotected insertive anal intercourse Unprotected insertive vaginal intercourse Unprotected receptive oral sex (without ejaculation) Unprotected insertive oral sex NOTE: Not all patients will readily report certain behaviors OTHER FACTORS HIV-infected sexual or intravenous Drug-use partner Diagnosis of a sexually transmitted Disease (STD) or ulcerative oral or genital lesions High-risk groups: Men who have sex with men (MSM) Intravenous drug users (IVDU) Female partner of MSM Spouse or partner of IVDU Secondary laboratory indicators: Leukopenia Thrombocytopenia The more risk factors, the more suspicious suspicious adjective Referring to the consideration of a particular disorder–eg, cancer, as a diagnostic possibility, as in 'suspicious for malignancy' the clinician clinician /cli·ni·cian/ (kli-nish´in) an expert clinical physician and teacher. cli·ni·cian n. should be. This algorithm algorithm (ăl`gərĭth'əm) or algorism (–rĭz'əm) [for Al-Khowarizmi], a clearly defined procedure for obtaining the solution to a general type of problem, often numerical. is intended only as a guide and instructive in·struc·tive adj. Conveying knowledge or information; enlightening. in·struc  tive·ly adv. tool and
should not replace expert clinical judgment.
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