Alopecia Areata Evaluation
The evaluation of alopecia areata or hair loss begins with a history and physical examination. The diagnosis of alopecia areata is made on physical examination. Determining the exact cause usually requires blood tests or a biopsy.
Physical findings in those with alopecia areata include:
Tests may identify an underlying cause.
Tests used to evaluate alopecia areata may include:
- Antinuclear antibodies
- Complete blood count
- DHEA blood level
- Free testosterone level
- T and B cell lymphocyte counts
- Thyroid profile
- Syphilis test
Other testing used to evaluate alopecia areata may include:
- Hair pull test
- Microscopic examination of the hair follicle
- KOH preparation:
- To look for fungus of the scalp
- Scalp biopsy
Continue to Alopecia Areata Treatment
- Lenane P, Pope E, Krafchik B. Congenital alopecia areata. J Am Acad Dermatol. 2005 Feb;52(2 Suppl 1):8-11. 
- Rainforth SI. Historical diagnostic and treatment. Alopecia areata. Skinmed. 2005 Jan-Feb;4(1):5. 
- Sladden MJ, MacDonald Hull SP, Wood ML, Hutchinson PE, Messenger AG. Alopecia areata: the need for guidelines and evidence-based dermatology. Br J Dermatol. 2005 May;152(5):1086-7.