Pattern Baldness
Symptoms usually begin in late puberty or young adulthood. Symmetrical thinning of hair or hair loss commonly occurs on the outer ear flaps, under the neck, on the chest, backs of the thighs, and behind the ears. There is no associated skin inflammation, itch, redness, or rash. In Dachshunds with hairloss on the outer ear flaps, complete hairloss usually occurs by 8-9 years of age and the exposed skin becomes dark/hyperpigmented.